Zoro has attacked Prometheus doing zero damage long term becasue he has no soul power to circumvent her hax and BM has got off cheap shots on Zoro, those are skirmishes, and shouldn't be used for the crux of why this was brought up, to say that Zoro is fighting a flying enemy already, he isn't. he is intercepting fireballs close in range while she darts around unscathed.
No it's cheap and scummy and shouldn't be used for powerscaling, 5vs1 on Kaido is pathetic and they should be ashamed they are resorting to this to win it makes them look like Blackbeard vs WB. Luffy should not be happy with a victory like this.
Kaido is focused on Luffy, Luffy is focused on Kaido, the others were stopping BM's sneak attacks for the most part or taking some of Kaido's AoE attacks when he can be bothered if they sneak attack him too much.
See hybrid Kaido vs Luffy last chapter to see what it looks like to fight Kaido, the barrage of directed attacks and relentless pursuit, none of the other SNs have had to deal with that shit.