My perception is that the strongest hype around Speedmasters has to do with associations with NASA and space flight. The stronger the connection, the bigger the hype. The movement in the day date is technically impressive and arguably and excellent value but without any sort of lineage to the 321 it seems the Speedy fan boys (guilty as charged) are less interested. It’s a great watch and if you like it you’re getting a great value.
To give just a tad more context, the only Omega watch bearing the Speedmaster name without the iconic Moonwatch case design that interests me personally is the original Mark II with an 861 movement. It’s silly but that movement makes it feel more ‘authentic’ as a Speedmaster to me. Purely subjective, of course. You do you.