I agree, but I think there is a time and a place. For example, if I posted an excerpt on Tapas, I need to be graceful about any feedback that I'm given, but if someone blows up my comments with notes on grammar, etc - that's uncalled for and frankly not helpful. A lot of platforms don't give writers the freedom to delete comments/reviews, so even if you addressed the changes they brought up - the negativity follows you. It's also really disheartening if you aren't a native English speaker or are trying out a new writing style.
And honestly, the grammar reviews probably bug me most because the people either treat the grammar mistakes like it completely incomprehensible or they refuse to comment on the actual story. I had a writing buddy whenever I shared what I thought was a fire scene with her, would routinely pick out the errors. I didn't ask her too. I just wanted someone to be excited about the work with me.
*Note: I do think reviews are the place to discuss glaring errors that future readers should know about, like if a story is hard to actually to read or has toxic elements like racism or homophobia.