From the post:

potentially making more money than I've done in the past by working 40 hours.

And I could retroactively pay contributors, who made bg3.wiki what it is, for their past volunteer work. Potentially significant amounts,

It might make lots of money, and I could pay all past contributors.

they will be very non-intrusive and clean.

I wonder if he's overestimating the potential ad revenue here. Many of us use ad blockers, and some only use bg3.wiki at all because it's free of the junk that comes with getting/sharing the same information elsewhere. If the money he's expecting depends on traffic remaining the same once ads are introduced, and users not using ad blockers, I think the income estimates might be... unrealistic.

In any case, he does ask for feedback at the end of the post. It might be worthwhile to send him a (kindly worded) note.