This does not bother me much. Such complaints have been there for every model, just different. I haven't seen a Thinkpad (except maybe X30x?) where someone hasn't complained about build quality. BIOS things typically do get resolved. I still remember the T60 BIOS version that broke USB peripherals during boot. It was fixed. The TOLUD issue that broke eGPU on X220 also got fixed, sort-of, I think.
Some things get better, others get worse, but overall the package remains acceptable. Except for the keyboard. The 6-row, to me, is no longer acceptable. Similarly, no trackpoint (or one without fully functional 3 buttons) would not be acceptable. No mechanical dock? Borderline (esp. since Thunderbolt docking is a viable option). No Ultrabay / Wired LAN? I guess even that would not be a deal breaker.
Like you said, it's mostly a "want", not a "need" thing. With a "classic Thinkpad keyboard" I would still feel it's a unique enough model for me to want to own. But other have different important criteria, and they are all legitimate.