I hace no expertise in the field of AI ethics, and I'm not sure what to think about the Timnit drama in general, but I don't think what you're saying here is really accurate. There can be a lot of value in pointing out problems even if you're not the one who can provide a solution. If no-one else has spotted the problem then pointing it out can draw the attention of those who might know how to fix it before things get worse.

If you can say "hey, there's a flaw in the design of this rocket that means it'll explode if we launch it, wasting millions of dollars" then that's valuable to your company, even if you don't know how to design a rocket that works.