Honestly, I will say something that might upset some people - but I don't think 2018 iPad Pros had bending issues either. I've carried mine across airports, parks, offices, threw it in various backpacks - and it was straight as the day I got it. And then I sold it to a colleague, and they still use it - and it's still straight. Of course, it's good that the M1+ iPad Pros improved on this, but I think this issue was overblown.
So I fully expect people to be rational about these new ones. Just kidding, of course they won't. Someone will bend it intentionally and we'll have 100+ videos about it and people here will say this is proof that Tim Cook needs to go. But in reality, I expect it will be fine. The real question is whether they will bend more easily compared to previous ones, but again, regardless of that - I am not worried.