BSA is an old standard but ancient is not fair. Absolutely nothing wrong it at all nor having an older age. If we were still using cottered cranks I could see the ancient but a modern external threaded B.B. is hardly ancient even if BSA threaded.

Press fit could potentially work quite well for a B.B. if manufacturers had ultra high tolerances and gave more of a crap but honestly T47 sort of solves a lot of the issues that press fit existed for (like larger bb shell and bigger bearings) and solves those issues that we dislike about press fit. It isn't perfect but probably not a bad idea if we want stiffer B.B.s and larger bearings.