Certainly from the very beginning, there'll be some subset of the relatively few people who've actually tried a new language who don't like it for some reason or another, or object on legitimate technical grounds (the border between these two types of objections is murky).

As the popularity of the language grows articles are written, starting in the specialized press and (if the language is lucky) ending up even in the popular press, getting even non-technical managers excited and using the newest buzzwords.

With time, the recognition and consciousness of the language's deficiencies become more widespread among a wider portion of the programming population, and articles and discussions of such complaints become more widespread.

In the end, such complaints may become mere truisms, and the majority of the population just parrot the truisms and stereotypes while having only a superficial or even non-existent familiarity with the language that's criticized.

Of course, you could say that such things were going on all along, but it would be missing the broad ebb and flow of language popularity and people's reactions to them.