Dozens of gdm-session-worker [pam/gdm-autologin] processes

I have a non-server Ubuntu installation which I mainly use as a headless server. I don't remember what was the first version installed (there were several major upgrades) but right now I'm using the following:

Distributor ID: Ubuntu
Description:    Ubuntu 20.04.3 LTS
Release:        20.04
Codename:       focal

And I have dozens processes which look like this (from htop):

2167800 root       20   0  162M  7536  6756 S  0.0  0.0  0:00.03 ├─ gdm-autologin]
2167803 root       20   0  162M  7536  6756 S  0.0  0.0  0:00.00 │  ├─ gdm-autologin]
2167802 root       20   0  162M  7536  6756 S  0.0  0.0  0:00.00 │  └─ gdm-autologin]

And if I try to count them:

ps aux | grep gdm-autologin | wc -l
237

I suspect that it is not normal and if it is indeed not, what can I do about it? I don't know when they started to appear in masses because I started noticing those only after my interaction with apt (mostly updgrade) started giving me the following:

Failed to open connection to "system" message bus: The maximum number of active connections for UID 0 has been reached

and

Error connecting: GDBus.Error:org.freedesktop.DBus.Error.LimitsExceeded: The maximum number of active connections for UID

Can these be connected?

UPD: Found another weird thing that I think is connected to all of this. Ran journalctl _UID=1000 and got 4116108 lines of logs since Feb 11. And it mainly contains the same Xorg log repeating over and over again: /var/log/Xorg.0.log

Sometimes using Fedora PAM autentIcation to AD domain autologin may not work for domain users.
There are some solutions which can help:

For autologin to gdm environment (using gdm-autologin) you need to put in /etc/sssd/sssd.conf

ad_gpo_map_deny = -gdm-autologin
ad_gpo_map_permit = +gdm-autologin

check it by:

 journalctl -xeu sssd.service

to prevent some GPO warnings good idea is set:

ad_gpo_ignore_unreadable = True