Based on these very unreliable sources, the number of drummers in the US may have increased from ~1 million in 2006 to ~2.5 million in 2018. That's during a time when the population increases from 298 million to 327 million.

So, during this period, a ~10% increase in population saw a 250% increase in drummers.

It does not appear that the drum kit killed the drummer.

Big caveats about what these surveys defined as "drummer" and that this doesn't reflect professional drummer gigs, just the number of drummers.

[1] https://m.facebook.com/Bumwrapdrums/posts/how-many-drummers-...

[2] https://www.quora.com/How-many-people-play-drums-in-the-US