remind me what CSAR assets the UK have
I can't remember when we ever had a formalised CSAR asset. Lots of "we can do it as a secondary or ad-hoc role" but never had a formal CSAR unit similar to that found in the USAF as far as I can recall.
will they also get burnt out like the Harrier mates
Maybe, maybe not. But like the Harrier a lot of other training may have to take a back burner .... hopefully the work on the ground attack side of the aircrafts development won't slide to the right (or indeed the money be spent elsewhere!).