I’m an Etsy store owner. I state clearly in my listing description that I do not provide the images and that they must have permission to use any kind of design/artwork they submit.
This one client sent me a bunch of images that they clearly found on Google that they did not have copyright for. Some had watermarks, one was even a link to someone else’s OneDrive account…
Me: I can’t work with these. You clearly don’t have copyright for these.
Client: Oh, I’m sorry. I didn’t know.
Then they sent me links to stickers and t-shirts on Redbubble and Teepublic.