I think the primary issue is the overwhelming presence of low-quality assets, both AI-generated and non-AI. The problem is that with the AI being an open bar, they can really flood a lot.
I would not have any problem with high-quality assets, even if it is made by AI.
By adding a small fee, you just add a huge incentive to everyone to focus on a minimum of quality, and all the shovelware will have a hard time spamming the store.
The buyers win with a cleaner store.
The scammers will think twice before publishing stolen assets or assets made with stolen IPs.
The serious publisher wins, with a less flooded store for visibility.
And FAB will probably win with less support (mostly related to stolen IPs)
As for those comments saying that 5$ would ruin you…I don’t want to be rude, but why would you release an asset on FAB if you don’t think your own work is worth 5$ yourself?