The reason is logistics (as usually the reason for most things military related). You can fit a hell of a lot more conventionally shaped grenades in a crate than you can with stick grenades. Even on a person, conventional grenades weigh less, are less cumbersome, and you can carry more compared to stick grenades. Stick grenades really only have their ease of throwing over a conventional grenade

Or maybe its because the Red Army had 10x the manpower than the Black Army did and the Black Army also hadn’t finished fighting its own civil war yet so it was now fighting a war on multiple fronts. Unlike the Red Army which had just finished off the White Army and now could focus all of its effort on the Black Army.

Ignore that the Ukrainian Black Army was pretty helpful in beating the White Army and only lost after the Red Army had finished all of its other opponents and decided to focus all its efforts on beating its former Black Army allies.

Seems like there is a bit of a trend of Marxist-Leninists thinking their anarchist allies are prime for a knife to the back

You prove the point by saying “just the neopronoun thing”