> - Any common BB standard (threadless ones are actually fine but require a well made frame, and you’d be surprised how many expensive frames are not well made)

I confirm. High-end bicycle here, "only" 8 years old. Full carbon (frame and wheels).

Bottom bracket is now a bit noisy. I went to a shop only doing that brand and...

"Oh but it's a threadless BB, the company doesn't make that anymore. And because it's a carbon frame, it's too complicated/risky to change it. We suggest you buy a new bicycle".

That'd be on a five digits bicycle supposed to be of the absolute best quality. And, well, it definitely has one of these not well made expensive frame.

P.S: had to google the acronyms you used but I suggest everybody here to listen: GP knows what he's talking about.