He has worked on some pretty good stuff in the past, including B&G boxes of Strahd and Eberron (no, I haven't seen these in person, but they look great).
He also designed or codesigned some of the best supplements (IMHO) on the DMs Guild, including Elminster's Candlekeep Compendium.
Perhaps most interestingly of all, he cowrote the superb "Fall of Elturel," which provides a much better Act I for Descent into Avernus—one that, if rumors are to be believed, is closer to what was initially envisioned by that campaign's designers before WotC decided to shoehorn Baldur's Gate into it in order to provide a tie-in for the video game. I can easily imagine the WotC hiring team saying "Yep, we should hire this guy because his PDF product really improves upon our own published adventure" and then shooting meaningful looks at whoever made the call to change it...
