Absolutely not. Looking at the content there, it’s quite literally general content.

Much of it isn’t what I’d consider casual conversation material so this sub still fulfills a distinct purpose. It’s more personal here imo.

While there may be overlap now, I think if that sub lemmy grows a lot in the future it will become much less focused.

Couple of thoughts:

Casual Conversation was a nice community on reddit and it might make it easier for people coming from reddit to find familiar communities in Lemmy. But your point about activity is good, makes it easier to come to lemmy if you see more activity.

As I understood !general@lemmy.world can have also serious and controversial topics and it has way more posts with links, while here the emphasis on posts is to make a text post.

Not for or against merging to general, just adding my thoughts :)

Edit: clarification and typo fix.

I agree with the other comments not to merge. I think the vibe just is not similar. In return i will try to keep this community more active