former etsy seller here, the problem isnt with the payments, they have it all integrated and whatnot, it's the increase in fees and increase in Chinese competition dropshipping and print on demand. it's just harder to make money for legit crafters. this goes back etsy's IPO

if you open up a separate ecom store, there are different options that make it easy to accept lightning and btc, like btc pay server.

you can have that alongside the usual stripe options

if it's btc related products, that would be different, but in each case, you'll need to do actual marketing and outreach and whatnot to build awareness