Why is being a vocal member of a community frowned upon?

[VanceIX]

Mummelmann said:
Being a vocal member is fine; it's all about what those vocals consist of.

Very true. I'm referring to how people get bashed for respectful opinions. For example, I criticize something about a videogame that I felt could have been done better, and then get called out for it in a disrespecful way.

I guess it's more a matter of respectfulness, debate is great and I'm happy that people have a wide array of opinions, I just don't like it when people convey them in a rude way.