The problem is that many people have only a poor ability to recognize the passive voice in the first place. This results in the examples being clunky, wordy messes that are bad because they're, well, clunky and wordy, and not because they're passive--indeed, you've often got only a fifty-fifty chance of the example passive voice actually being passive in the first place.

I'll point out that the commenter you're replying to used the passive voice, as did the one they responded to, and I suspect that such uses went unnoticed. Hell, I just rewrote the previous sentence to use the passive voice, and I wonder how many people think recognized that in the first place let alone think it worse for being so written.