There’s not enough userbase to literally split them for every single distro. Remember even with “a bigger exodus” than what we got, reddit’s userbase is still hundreds of times larger than ours.
Lemmy’s numbers have gone downwards and stabilized. Currently one of the more popular moderation actions has been to shutter the incredible excess abundance of communities and consolidate on main communities.
/c/linux is good enough for most news discussions, and I would argue that places like /c/linuxgaming are better resources to troubleshoot your system based on purpose rather than just on distro.