About a third of all assets on Itch are marked as AI-generated
It is about a seventh. Not a third.
It is 16k/112k, that is 14%.
And 80k/112k are positively marked as having no ai. Which is 71%. Where you probably got your 1/3. The discrepancy is old assets that have not filled out the disclosure question.
The bigger problem is that 2/3 of new assets published are ai.
3.5k last 30 days ai
2.2.k last 30 days no-ai.
The search feature got overhauled, but they forgot to add the no-ai filter there. This is vital for asset searching, since many assets are descriptevely named.