There are all kinds of problems with each Worldcon being essentially built from scratch, but the difficulties with voting remotely in site selection is one of the biggest.

There have been various attempts to allow proxy voting or remote attendance at the Business Meeting -- I think there's even something about the latter on the agenda for this year. I hope it passes, because I entirely agree that Supporting Members should have a voice. Because of Worldcon's mobility, there are plenty of people who can't attend every year, but that doesn't mean these folks have any less interest in how things are run, especially but not exclusively the Hugo Awards.

I do think renay has a point about some of the stumbling blocks to remote voting being there on purpose. It's a gatekeeping function, and unfortunately there are still too many fans out there who believe in gatekeeping.