I think the word I should have used is coordinated, not concentrated.

While I can appreciate your definition, it doesn’t match the definitions I’ve heard or that came up when I looked it up. What you’re talking about definitely falls under the umbrella of review bombing, but the broader definition is more inclusive than that. It also doesn’t imply the bombing is unjustified or without merit, simply that it’s a coordinated disruptive tactic to try and force a change. I think review bombing is a good thing, and is one of the few tactics consumers have to force shitty companies to listen.

You might argue that these new reviews weren’t coordinated, and I think that’s possible. There’s no way for me to know that for sure, but it’s hard to imagine that many negative reviews happening all at once without some amount of coordinated effort.