This whole idea of wet-behind-the-ears minimum time CPL holders becoming FIs is plain daft.
Which other profession uses its least experienced people to train newcomers?
In the UK military, pilots have to be selected as suitable to become qualified flying instructors and their subsequent progress is carefully monitored. Whereas in the civil world, it's very often low timers (with zero real world experience) desperate for RHS people-tube slots who try to become FIs.
The answer? Airlines should go back to running their own pilot selection and training programmes. But will bottom-line bean counters agree to that? Not a chance......