Chromium's a hard one for Debian. It is a big software that often suffers from security issues due to its size but it is hard to package according to Debian's policies. Its upstream ships with forked dependencies included, and this goes against Debian's policy, however Debian doesn't have enough manpower to untangle this mess while keeping up with Chromium's upstream.

I wish they would just drop it from their repos and suggest users to use flatpaks (or Nix?) or the proprietary variant Chrome (which is what most likely want due to sync), it is a big liability to keep an insecure browser around.

and Firefox.