Pretty sure they meant that LLM companies can easily scrape Lemmy and train models off of the posts without any authorization. Its freely, publicly accessible(until, you know, they end up DDoSing these poorly funded instances out of existence by scraping them).

Your info is a bit out of date. Epic already sold off Bandcamp back in 2023 during layoffs. Its owned by Songtradr now, who I personally know nothing about.