

I can also do that on my MacBook.
(This comment is not as facetious as it seems. I knew you could copy text from images, but I just tried to test some limitations, and it’s a weirdly comprehensive feature - I can copy text from photos and/or videos in the screenshots app, the Preview app, the Photos app, QuickTime, and even from YouTube videos in Safari (but not Firefox, interestingly enough) - assuming that means it’s an OS-level thing. Quick search says this rolled out in 2021.)
I’m not sure. I suspect that TextSniper predates the feature on Mac.
On Mac (and iOS, too) recognized text is just treated as text. So on Mac, you just get a text selection/entry cursor (the “I-beam”), and you can select text for whatever action (copy, lookup, etc). On iOS it’s same, except no cursor on account of it being a touch interface. It’s sort of annoying on iOS with images that have a lot of text - double clicking an image to zoom has to be done with care, otherwise it selects text instead of zooming in.