If you look carefully at Meta’s actions in the last few years, you’ll notice they’re slowly stepping away from the Facebook brand and product. I suspect that they no longer internally consider Facebook to be their main product, giving way for Instagram, which at the moment is a lot more popular and despite the obvious association doesn’t have a tainted name the same way Facebook does.

I wondered if it might be something to do with the real name policy on Facebook. Instagram is closer to Twitter in not having such a policy.

Same here. I reread it because I thought I missed the word “Facebook”.