diff --git a/packages/babel-core/src/config/validation/options.js b/packages/babel-core/src/config/validation/options.js
index 69d25f1db6f7..507b183fa07a 100644
--- a/packages/babel-core/src/config/validation/options.js
+++ b/packages/babel-core/src/config/validation/options.js
@@ -332,25 +332,9 @@ type EnvPath = $ReadOnly<{
 export type NestingPath = RootPath | OverridesPath | EnvPath;
 
 export const assumptionsNames = new Set<string>([
-  "arrayLikeIsIterable",
-  "arrayIndexedIteration",
-  "copyReexports",
-  "ignoreFunctionLength",
-  "ignoreToPrimitiveHint",
-  "inheritsAsObjectCreate",
-  "iterableIsArray",
   "mutableTemplateObject",
   "newableArrowFunctions",
-  "noDocumentAll",
-  "objectRestNoSymbols",
-  "privateFieldsAsPublic",
-  "setClassMethods",
-  "setComputedProperties",
-  "setModuleMeta",
   "setPublicClassFields",
-  "setSpreadProperties",
-  "skipForOfIterationClosing",
-  "superAsFunctionCall",
 ]);
 
 function getSource(loc: NestingPath): OptionsSource {
diff --git a/packages/babel-core/test/assumptions.js b/packages/babel-core/test/assumptions.js
index a4e62b481f51..ad23adae50a7 100644
--- a/packages/babel-core/test/assumptions.js
+++ b/packages/babel-core/test/assumptions.js
@@ -34,11 +34,11 @@ describe("assumptions", () => {
         assumptions: {
           setPublicClassFields: true,
         },
-        presets: [() => ({ assumptions: { setClassMethods: true } })],
+        presets: [() => ({ assumptions: { mutableTemplateObject: true } })],
       }).assumptions,
     ).toEqual({
       setPublicClassFields: true,
-      setClassMethods: true,
+      mutableTemplateObject: true,
       // This is enabled by default
       newableArrowFunctions: true,
     });
@@ -93,7 +93,6 @@ describe("assumptions", () => {
     const makePlugin = () =>
       jest.fn(api => {
         api.assumption("setPublicClassFields");
-        api.assumption("mutableTemplateObject");
         return {};
       });
 
@@ -110,11 +109,11 @@ describe("assumptions", () => {
 
       run(plugin, {
         setPublicClassFields: true,
-        setClassMethods: false,
+        mutableTemplateObject: false,
       });
       run(plugin, {
         setPublicClassFields: true,
-        setClassMethods: false,
+        mutableTemplateObject: false,
       });
 
       expect(plugin).toHaveBeenCalledTimes(1);
@@ -125,11 +124,11 @@ describe("assumptions", () => {
 
       run(plugin, {
         setPublicClassFields: true,
-        setClassMethods: false,
+        mutableTemplateObject: false,
       });
       run(plugin, {
         setPublicClassFields: true,
-        setClassMethods: true,
+        mutableTemplateObject: true,
       });
 
       expect(plugin).toHaveBeenCalledTimes(1);
@@ -140,11 +139,11 @@ describe("assumptions", () => {
 
       run(plugin, {
         setPublicClassFields: true,
-        setClassMethods: false,
+        mutableTemplateObject: false,
       });
       run(plugin, {
         setPublicClassFields: false,
-        setClassMethods: true,
+        mutableTemplateObject: true,
       });
 
       expect(plugin).toHaveBeenCalledTimes(2);
@@ -154,13 +153,11 @@ describe("assumptions", () => {
       const plugin = makePlugin();
 
       run(plugin, {
-        setPublicClassFields: true,
-        setClassMethods: false,
+        mutableTemplateObject: false,
       });
       run(plugin, {
-        setPublicClassFields: false,
-        setClassMethods: true,
-        mutableTemplateObject: true,
+        mutableTemplateObject: false,
+        setPublicClassFields: true,
       });
 
       expect(plugin).toHaveBeenCalledTimes(2);
@@ -171,10 +168,10 @@ describe("assumptions", () => {
 
       run(plugin, {
         setPublicClassFields: true,
-        setClassMethods: false,
+        mutableTemplateObject: false,
       });
       run(plugin, {
-        setClassMethods: true,
+        mutableTemplateObject: true,
       });
 
       expect(plugin).toHaveBeenCalledTimes(2);
diff --git a/packages/babel-helper-plugin-utils/src/index.js b/packages/babel-helper-plugin-utils/src/index.js
index e381cebd76e3..2614b7e8ea4d 100644
--- a/packages/babel-helper-plugin-utils/src/index.js
+++ b/packages/babel-helper-plugin-utils/src/index.js
@@ -2,12 +2,12 @@ export function declare(builder) {
   return (api, options, dirname) => {
     let clonedApi;
 
-    for (const [name, create] of Object.entries(apiPolyfills)) {
+    for (const [name] of Object.keys(apiPolyfills)) {
       if (api[name]) continue;
 
       // TODO: Use ??= when flow lets us to do so
       clonedApi = clonedApi ?? copyApiObject(api);
-      clonedApi[name] = create(clonedApi);
+      clonedApi[name] = apiPolyfills[name](clonedApi);
     }
 
     return builder(clonedApi ?? api, options || {}, dirname);