Same here. Believe it or not.
In my office, I've seen people of ages 22 all the way upto 54 using OnePlus phones... (including me)
I've been observing the smartphone market far better and far longer than you. Pretty sure they will come unscathed...
We shouldn't insult Chinese tech until any foul play is caught by them. If you want to not buy it's fine. But don't make this kind of statements. Brands can legally take action against you.