I feel it could have blown up for anime fans similarly to MT and 86. Considering how popular it is with 0 official release outside of Japan and Southeast Asia. Still, the issue with those platforms is that they haven't shown to handle anime properly. The way CrunchyRoll handled Spy x Family was great with 1-2 week wait for its dubs. Similarly, the same should be the case for CSM.
Granted Netflix has gotten better and anything is better then how D+ handled this series. At this point for an anime to blow up it needs to be handled by either CrunchyRoll/Sony or HiDive/Sentai. Having a delay for subs from the Jp release of these shows KILLS any hype that could come from it.