Considering the stuff DM pulled last time, I wouldn't be to happy about it either.

Not to mention that they also have some past experience with her as the GM...

"No, not DM..."
"So luke instead?"
"Ok, DM"

The lesser of two evils- no, wait, DM is eviler.

The less chaotic of two chaoseses.

-es.

i can see sanji becoming gmpc somehow, and to avoid all powerfull gmpc, dm is the one dming on Sanji's fight

since they split the party from time to time, having a co-GM might be a good idea.

Okay, I can't over this, who uses Skype for TTRPG? I have never seen that, the people I see always uses Discord.

It’s actually quite common back then