"wave of comments" is correct and usable in written English.
You can use it when talking about a large number of comments made about a particular topic or thing. Example sentence: The President's speech generated a wave of comments on social media.
News of the paper's closing set off a wave of comments from Phoenix fans across Twitter.
A plague on them, I say (and I'm now sitting back in anticipation of the wave of comments suggesting that people in glass houses really ought not to through stones … ) Next up, short and sweet, but with all the enthusiasm you'd hope for from a friend's passionate recommendation, Voiceofferney waxes briefly lyrical about Carl Sagan's The Demon Haunted World: Science As A Candle in the Dark.
The photo triggered a wave of comments in social media, on Russian radio and even on television.
That has not stopped a wave of comments on Rockey's blog and the DrugMonkey blog from investigators worried about the changes.
Another wave of comments through other media, like Facebook, can promote anonymous, electronic bullying.
The only place Small Business America has an edge over its Corporate counterpart is in numbers of voters, which is why the president's gaffe set off such a wave of comment.
It's not surprising this collaboration has inspired a wave of negative comments at the bottom of news articles.
Stephen King has responded to a wave of Islamophobic comments blaming Muslims for terror attacks in Paris with a tweet demonstrating the hypocrisy of such an argument.
The clip has been re-shared across the internet following a wave of Islamophobic comments blaming Muslims for the terror attacks in Paris which killed 129 people.
The party has been embarrassed by a wave of controversial comments made by activists, councillors, and an MEP over the past year.
Instead her social media posts on Israel generated a wave of feverish comments about how Jeremy Corbyn's leadership had "given permission" for antisemitism to thrive in the party.
