Big Mom is a joke. She wasnt even a proper antagonist in her own arc. She aint doing shit here either. Her and her dumbass crew will be doing some other shit....Dont know what else yet.
The Big Meme Pirates are only here for the hype element. They wont actually be engaging with the crew. The plot will see to that.
Y'all wanna treat Big Mom as a meme for trolling purposes or thinks she's a joke that's cool, but let's not carry that over to her actual in-manga status. That joke of a Big Mom treats Kaido as an inferior. If shes a joke, that's not good for Kaido.
Simple translation of their convo:
"I'm gonna kill your ass if you come here linlin!" - Kaido
" Mf I wish you would try doing that" - Linlin
"I ain't calling to debate with your ass, just letting your ass know, don't get the fuck in my way, got it?"- Linlin
"So be a good boy and listen to Mama" - Linlin
"Her arc"? No clue what this means, Big Mom joined the current arc 21 chapters into it the arc, that's currently at 50+ chapters.
We can also get into the fact she's had relevance every single arc of the timeskip, unlike Kaido. Was declared war on by Luffy before Kaido got declared war on by Luffy.