@ernstlx There is a very old long thread discussing the change. Something to do it being misused, and “drums” not looking right in some language or other. So every “drums” was renamed in one edit. Leaving the current confusing mess for anyone reading English.
Now and then I take long correction editing sessions of resetting membranophones to drum(drum set) for various artists I trip over.
Like many in the UK I have never heard of a membranophone. I assume most British drummers don’t know they hit a membranophone either…
This would have made so much more sense… but there was a reason why that didn’t happen.
(See also “guitar family” another change that happened around the same time…)
Trying to find the threads… one from 2019 ( The Membranophones Poll ) when a vote happened to change membranophone relationships over to drums (drumset)… but I don’t think the bot ever got run (?).
Aha - the original 2017 thread ( Drums vs. drumset ) if you want a 33mins read of 143 posts on why it happened
(Sometimes I see old posts of mine in threads like those and feel rather embarrassed as to my knowledge back then… 
)