

I was using it by 2020 for sure, so it predates the macOS and iOS feature. This was most handy in ERP software we were using that had most info display in unselectable windows. Really annoying when you wanted to copy something like a part number or invoice and put it in an email. This got us around that, and when macOS added the feature it still didn’t help us since these weren’t images.
They had a fairly detailed blog post a few days or weeks ago about the rollout. The plan is to bring it to open source but they’re still working on issues with it that are easier to control on their own servers. IIRC the code for it is actually in the open source version but disabled. I think they said if you know what you’re doing you could go into the code to enable it but it’s unusably slow right now, or something like that.