The Black Lotus situation is now worse than before layers, it's unsustainable

There are also, as many have pointed out, game-economy concerns. It’s true that we allow more simultaneous players onto a Classic realm than were allowed in 2005, thanks to both hardware and software improvements, but this means that Black Lotus is more rare on a per-capita basis than it was 15 years ago. Merely increasing realm caps would only exacerbate that problem.

Could we increase realm caps? Yes, but only if we also added something like layering.

This is from Kaivax: Addressing Population Concerns in WoW Classic

Seems to be that BL prices/scarcity is an issue that’s on their radar.

People will never flask out of necessity

Yeah perhaps but most guilds that will clear Naxx will still require it so saying it’s not strictly necessary is not really a way out of the situation.

Sorry I’ve no idea how to quote two people here.