administrators group

Tez

I asked the clanker to do it:

Each user turns it on from their own account settings.

Log in and click your avatar. In the default Harmony theme it’s at the bottom of the left sidebar on desktop, or in the bottom bar on mobile.
Choose Settings.
Scroll to the Signatures section near the bottom of the page and flip “Hide other users’ signatures” on.
Click Save changes. Signatures disappear on the next page you open.

To turn them back on, flip the switch off and save again.

https://brandmu.day/me/settings

Pyrephox

It almost sounds as if you became frustrated and unhappy when your online experience was derailed by people forcing unwanted interactions on you with no consideration to whether you were having fun and when you had no way to stop it except logging off.

There may be a lesson in there worth learning.