It’s an example of when fingers don’t work – and a tyre lever is essential.
There are many rim/tyre combinations which are just a bit too tight for fingers, no matter how gnarrrr you think you are.
Over the years of pissing about with tubeless in particular UST, I’d say after many scrubbed knuckles, near hospital visits with broken fingers, and lots of blood, I’m bloody good at getting tyres on or off without tyre levers. As xiphon says though, there are just some combos it ain’t ever gonna happen and you have to reach for a lever!
Have you heard of a brand called Oakley?
Haha, precisely. £70 is mucho cheap for a decent pair of glasses these days! You don’t have to buy them, freedom of choice and all that (and you can get MUCH better glasses than in B&Q like Bolle for cheaper than the shite they sell in B&Q etc.), but I’ve spent way more on Oakleys in the past, and probably will do again in the future when I’ve got cash spare…