Some people have tokens but no money. Tokens, like Amazon gift cards and Tide detergent [1], are a form of currency in a way. If people have a currency equivalent they want to spend for your benefit, or the collective benefit, it makes sense (depending on level of effort) to enable them to do so.

[1] How Tide Detergent Became a Drug Currency - https://news.ycombinator.com/item?id=5023204 - January 2013 (124 comments)

(edit: maybe put AI tokens on stablecoin rails as value tokens? could be fun, could move them around instantly between participants on the value rails and could consume them programmatically, if someone implements this idea, buy me a beer!)