bit contradictory when TS mention can’t get new job but need to keep own staff because no one know how to do their role. yr boss might view you the same. maybe time to ask for higher pay instead? or talk to boss to explore job scope expansion so you can transition?

about outside opportunities, might be TS salary expectation too high already? it also does sound like you have opportunities but don’t want to risk jumping. 8 years is a long time and the anxiety is understandable. but it’s rare to jump from something you hate directly to something you love. often takes a few moves.

gd luck! doesnt sound too bleak or dead end.