no. i am not saying that all people of a language “sound gay.” just that some people have a different pattern of speech.
so if we take the word “hello” in english, a gay man is more likely (than a straight man) to say “HHHEEEEEYYYYYYYYYY-AAAYYYYY” or the “gay lisp” as asmonet pointed out.
it is an accent within a language, not the language itself. (so when you say it is Swedish, you mean that all of the Swedish language sounds “gay-er” than Norwegian, but the “gay accent” is an “accent” within whatever language they speak.