I know a couple buddies of mine who would love to just grind out Raids for people’s alts all day, the gold is fantastic and you can easily get a lot of it depending on how fast you work through each customer.
Boosting could mean organizations made by players, spamming advertisements on multiple servers - the thing Blizzard banned from World of Warcraft recently - even it was in-game service for in-game gold.
But yeah, the wording is vague, so they can loosely mete out punishment if they feel like it.
Based on SGR standard, they consider boosting to be someone else piloting an account for money, or providing any services for money.
They did make changes to make bussing harder but they never punished anyone bussing for gold.
Now, AGS may have a different view on the subject. We will find out if this actually really becomes an issue.
Honestly, it is an ingame service for ingame gold. Seems pretty organic if you asked me and not grounds for disciplinary action, unless that gold earned is sold for money, which is a completely different discussion.