That's a mostly fair analysis on the whole.
That said, some of these issues are also found on authentic hanas. The swirl marks, crooked 510 atomizers (which seem far more prevalent in hanas than they do on the clones), poor screws, and poor threads (all aluminum threads are poor by nature of aluminum being so soft). All of these are issues with the original as well. The only difference in that regard is that you won't have the privilege of paying an extra $180 for those flaws if you buy a clone.
And many of these issues don't seem to be happening with any sense of frequency to be a legitimate gripe for the product as a whole. I've not read a single instance of buttons falling out (except for on the test unit). Boards falling out or shifting don't seem to be a widespread problem either. It seems like a lot of conjecture based on very few real instances, if not simply based on theoretical concerns rather than real-life experiences.
I haven't noticed a dearth of "Too Hot" messages on the clone as you have, and certainly no more than on an authentic
dna. In fact, I haven't had any on my clone. That doesn't mean it doesn't happen to some, but it seems like you're purposefully overblowing the issue (and many others) to fit your conclusion. Lots of this stuff needs verifiable substantiation (notes on exactly how many times it happens and under what circumstances) rather than how you feel about it.
Judging clones with NO LOGO and no trace of HANA on them whatsoever along with those that do have said materials isn't quite fair. They are different products (even if the only substantive difference is the inclusion of the trademarked logos/names). To address them as the same product is an attempt at tarnishing one thing for the fault of another thing. How can you judge a no logo clone because another product made by the same manufacturer does have logos? It's purposeful dishonesty.