It's already happening, and it's ridiculous.
It needs to end.

This goes against the Bitcoin ethos and for all the bitcoin maximalism out there, I fail to see how that is reasonable.

I go on Nostr and see
"bio: Bitcoin maximalist! Live or die on this hill!"
"Ln address: @getalby.com"

Hum...
Now don't get me wrong, I know you xan keep only what you immediately spend on a custodial wallet but
a) it sets a precadent. On fact, it already has.
b) if they have their own node, might as well use it, no reason not to.