Yes, definitely undesirable (from my point of view too). I could change this so mails originate from @SE23.life but I’m concerned that no human would see replies to this system user account. There may be something I can do about that, and I’ll look into it.
As mentioned in an earlier post, the site has been reconfigured so it now takes more than two flags before a post is automatically collapsed.
If several people feel strongly enough about a post to flag it, there are likely many others in the community who also feel the post is inappropriate.
But it is possible that flaggers may not be representative (if they are colluding against an individual, for example). In this case the mod team will take action, as we monitor flagging.