All good points and part of the calculus I was referring to, so thank you. But, like the admittedly only three folks so far who have had four engines self destruct literally under them, if I had one self destruct under me, I too would very likely lose confidence in the bike. I don't think I would change my thinking to "disposable" and simply buy another. I might decide, like those others did, that while it's a good bike for other use cases, it's not a good choice for what I was trying to do with it. I'm certainly not there yet. I'm going to use the heck out of it and see.
P.S. I was really bothered by the drum brake too. If I really start thinking along those lines, I'm sure he could do a disc brake plus there are other bike choices I'd consider too. The point is, I don't necessarily have confine myself to current offerings.