I think you’ve got slightly the wrong end of the stick. No-one thinks that rollerblading went out of style because people were afraid of gay people. So the OP’s inaccurate (or at best overly narrow) assumption regarding what ‘homophobia’ means is leading them to misunderstand the claim about what happened. These days the term ‘homophobia’ is very rarely used to refer to a literal phobia of gay people.

(The OP said ‘fear of homosexuals’, not ‘fear of being perceived as homosexual’.)