SEE should minimise the tech exploits each year as much as possible, but beyond that I reckon it's fair game. Unless you sit there with a single browser on a single laptop counting down 20 seconds til the next refresh, we've all gamed the system to some degree.
I'm firmly in the 'system isn't perfect but it at least it (crudely) rewards effort" gang. I think it's better the festival is filled with people who make an effort to get there. Everything about Glastonbury is about making effort, starting with the long walk from the car-parks.
You can sit on a high horse and refuse to join up with at least a couple of other groups, if you wish. On the other hand you've got a few months now to find some people, find a decent auto-fill tool, and maybe install an extra browser or two to increase your chances. You'd probably have much better odds with that than in a lottery.