I was lucky enough to buy a Nicolai 12 years ago. It was and is very industrial in appearance but the build quality is superb. In all that time the only work the frame has required has been a full service of bushes, pivots and bearings three years ago. Everything always aligns, the fishscale welds are a joy to behold, the anodised finish is even now so good.
This sort of illustrates the previous points.
What you describe as “quality” isn’t what an engineer would recognise as “quality”, it’s mostly aesthetics.
I don’t doubt your frame was well put together and met the manufacturer’s spec’ (12 years of service and only one bearing change is probably a good indicator TBF) but you have no real frame of reference (pardon the pun) for what that original spec’ was and where in the tolerance band each critical dim sat on inspection. It’s pretty and it’s not broken is about all most customers really care about…
Which is fine, being pretty is important too, nobody is going to buy a bike they don’t like the appearance of. But I think what this thread sort of highlights is that there is a significant gap between consumer’s perception of “quality” the truth of what “quality” means to manufacturers, and how and why it is achieved/traded off against consumer’s pricing expectations.
What Raul’s video above and several of Hambini’s abusive rants make clear is that in trying to make an apparently simple BB bearing interface lighter, easier and cheaper to produce many manufacturer’s have bumped up against similar issues from slightly different angles and actually managed to make the situation worse for themselves over the last decade and a half.
We end up coming full circle to ‘T47’ a 10mm bigger, metric oversized threaded BB… I bet nobody remembers “ISIS Overdrive” now do they…