Okay, but I think the genders ARE actually relevant because while we'd all like to think that we're all the same, we're not.
DH has a group of friends with a similar sort of whatsapp group chat that has been going on for years and years. At various times, there have been this sort of issue. The reasons (that I'm aware of) have included:
1 One of the men having an affair. That really knocked things for a long time, made more complicated because the wives are friends too (albeit not as close).
2 One of the men being a bit odd and flakey during significant physical and mental health issues. Same man tends to disappear when work gets him very stressed out.
3 One of them turned out to be an addict and disappeared completely for a while. When he reappeared, he'd been fired from his job, his wife was divorcing him etc. It was a really fraught period for the group but they worked through it and, if anything, their friendship is even stronger. I even like the addict guy now and for a while I wouldn't have poured water on him if he was on fire.
4 this one happens now and again - one of them will say something that someone else takes umbrage to. Usually there will be silence for a while, then a brief argument, then they all move on. But these are a group of 6 men, 5 of whom are mediterranean! So it can be volatile! 
We have never had any issues where the wives are irritated/upset about the group chat, but I can 100% also see this as something that COULD be irritating. And certainly in the early days of this chat, there were times when I'd have to remind DH that actually, we were about to do something with DS so bantering with his buddies needed to slow down. it was never a particularly big deal however. But I have seen lots of owmen on MN get really frustrated because theor partners are constantly in chats with their friends, or gaming online, and not engaging woith them. x1000 if they have small children or a new baby or whatever.