I mean, Traveller's Gate is still good, if a bit unpolished in hindsight. It's just plain fun, especially if you're familiar with fantasy and anime tropes, though I recommend keeping a glossary nearby to make the comprehension of the the various terms easier.
The Last Horizon, the series he's working on now, is also a lot of fun. It mixes sci-fi and fantasy, and all the main characters are already able to bench-press continents (literally or proverbially), so their development comes via different avenues than Cradle, where Lindon's personal growth was tied directly to his power level. I wasn't as enamoured with the second Last Horizon book as I was the first, but it was still good, and unless Will Wight starts writing Nazi propaganda or something I'll continue to read everything he publishes.
I only ever got one ad in RIF, repeated in every spot. I think it was an app for organizing decks in TGCs, but as I don't play any TGCs, I never bothered to investigate. As with every other ad on the internet, I only interacted with it by accident.