Maybe Ultra didn't boost but, getting that speed up is worse than boosting.
Maybe 7ives didn't boost either but, guild sparring noobs+recruiting every decent/good player in the room to make sure they wont gs on another tag is worse than boosting too.
In the screenshot, it's obvious that Scooby(Male) was being sarcastic. In addition, it doesn't make sense to the guilds who got accused of boosting when they lose points. You might need to double check the definition of boosting. Every guild that boosted will be rested so, even if boosting makes it easier to enter gst, Mals still won't take the risk.
Also, hacking is worse than boosting. So the players who hack and still accuse guilds of boosting, it won't take more than a year till you see yourself in forums complaining about GPs because you're banned for the reason "hacking&cheating". It's pointless to talk to some people in this thread, so i'll leave it here.