Clickbait.
Even the .25ACP has it’s followers. Amateur gunmiths are chambering it in light single-shot rifles, as a reloadable stealth small-game round.
Only one I can see disappearing is the .45GAP. A round that never should have seen daylight to begin with, and nobody cared about when it did. Frankly, I’ve never even heard of it before.
There's nothing actually wrong with the .45 GAP; I load .45 ACP to the same length (& similar ballistics), so it will fit in double-stack .40 S&W mags...
;>)
Good point. The .45 GAP is already so gone that we’ve all already forgotten about it.