I don’t know... but I’m fairly sure that a lot of people use this as an excuse to be annoying by design. I’ve been camped someplace, like at the West Brit Bank, waiting for the sugarplum fairy to show up for 5+ hours... and the whole time flapping bat shows up, stands next to me, causing me to move because I don’t want to look at the flapping bat graphics while waiting. When I ask nicely for them to land, they instantly get nasty. No need for them to stand flapping, but they do anyway. See it all the time at the Lagtown bank, Atlantic... and 3+ of them unattended flapping at the same time really does start piling on the lag.
But... maybe this is part of the reason they are cracking down on unattended sitting, these super annoying gargoyles in flight mode. We call it Lagtown for a reason! I sure don’t think it's a requirement to upgrade our computers because people are annoying. It's a little unrealistic. People will do anything they can in UO to make themselves pests, is more like it. Just like how they spam EM events... the things some say is enough to get them banned with Mesanna sitting right in the room.