> ...as risky as installing a proprietary editor plugin which updates automatically, yes.

Can't you make the same complaint about any auto-update functionality in any software? Even if it's BSD licensed, you're still counting on whomever has authority to push an update to not push malicious code.

This doesn't seem to have anything to do with the fact that his code is proprietary nor his monetisation strategy, so why are you singling him out for those?