GW2 End Game LFG is disgusting - Discussion on ways around this

I am a generally chill commander no matter what happens. Today as I was trying to organise a raid squad for W567 FC, when our main tank/ahealer left without saying anything. So then I realised during raid and a kind player volunteered for tank and aheal duties.

Then 4 people left cos tank forgot to tough check. It really got to me how impatient people can get, and their unrealistic expectations in a pure PUG goup (I'm convinced these type of people have been kicked from their static and just troll the LFG system).

Anyways, I messaged one of them, tatteredf*ry, explaining it isn't nice to just leave the group without stating leaving and role, and that it was a pure PUG group, which is expected to have some complications. The most passive-aggressive reply I got and he sounded to be one of those entitled beings.

Anyway, I made a new LFG for W3 hoping HoT has some luck for LFG today. One of my old players, Ab*ss, join from the w567 group and didn't reply to anything (role etc). So after a few minutes, I kicked them. They joined back stating they don't like my attitude even after I explained they weren't replying. Anyways so these 2 muppets blocked me which is fine, but then they kept joining my squads and trolling with defaming messages.

I have had it with LFG. I have a raid static that has beautiful people, but sometimes can't afford to make the sessions hence LFG pug groups.

Feel free to share ways around this, as simply blocking a player does not prevent them from seeing and joining your LFG group, which I think ArenaNet should fix.