I understand it'll send many emails. But that's only something that becomes clear after you realize it will send emails at all. And the report page, again, does not say that!
What did you think happened when you actually Report a post, it has to take some action. The forum software isn't a piece of Avast software, but by SMF so there are limitations.
But now you know what happens from those who see what the action does.
These days that could be many things. Doesn't have to be email. Could be an instant message (Whatsapp, Signal, Telegram, whatever). Could just be a direct message on the forum itself. Doesn't have to be to everyone, but smart based on who is reporting as available at the time. Many things are possible. Blasting emails to every moderator is the very dumb and very old way of going about things. It must be the Avast way.
Edit: I've been a global moderator on a huge board for years. This was many moons ago and even then a report didn't mean everyone was sent an email. It went via a DM system and not on blast. So it's pretty sad to see two decades pass and come across this ancient method.
The problem is the forum software SFS, by Simple Machines, it controls who gets notified and by the Report to moderator and emails to all those moderators. That said, if sent by DM/PMs would just be shoving it out by a different means unless it it somehow restricted.
There are no less than 9 Avast Team members that have Administrator status, I have no idea if any have done anything administrative in relation to the forum software.
We have been banging on for ages to have this software updated and it appears to fall on deaf ears.