By the numbers, Discord is definitely more popular in the US, though it is pretty popular in the UK too.
Most of my online identities were started when I was in college and was happy to have them tied to my real name. (This is also when Facebook was popular, still good, and college-kids-only.) Since then, cancel culture et. al. has made me more wary of having my identity-adjacent usernames show up in hobbies like gaming.
If I want to be myname in some Discord servers and anonoguy in others, is there a safe way to enforce that boundary? What about if I want to work on gaming-related open source projects or 3D prints?
As the internet moves to logged-in-and-social-by-default, it's hard to know which identity to use for which service. Moreover, when things are constantly leaking/being hacked, I don't know that I want any service to know that anonoguy and myname are personas of the same individual.
And as LLMs become the standard, I'm not sure any of this is defensible. I imagine in a decade's time, it will be trivial for an LLM to go "this account and that account have similar interests/references/ways of typing - they must be the same person."
People massively underestimate the scale of whatsapp/facebook/tiktok (billions of MAU)
I use Slack at work, but at least there I have a workable plan: no notifications for most channels, read or at least skim all messages in every channel by EOD, don't read it outside of business hours unless I get a DM. Also, absolutely never join the chatty #random type channels.
But if you include other group msg platforms as the same thing (whatsapp, fb messenger, etc) i imagine most people know.
Moving into things like sports and what we would've called the "general blogosphere" in 2010 quite rapidly too.
I kinda hate it since it's hard to discover, but at least Google can't direct a million bots to it either that easily yet...
My guess would be near half, probably a 60/40 split.