MGD said:
" the industry is suffering from what amounts to a severe case of long Covid, following the exodus of tens of thousands of experienced personnel during the pandemic."
This sounds like lots of people just upped-sticks and moved way whereas 90% of 'the exodus' was due to the instant dismissals of the larger airlines' staff with dividends in mind and no thought for their recovery after Covid. As has been said on Pprune many times - experience (pilots, engineers, cabin staff, etc.) isn't kept on a shelf for immediate use. The airlines' dismissals brought on thousands of personal situation reviews and reactions.
Almost all over 55's retired (ca. 30% of all staff). A great many pilots and engineers retrained for new less pivotal jobs...plumbing, electricians, etc - I know of one ex-BA pilot who now delivers for Sainsbury's and is quite happy with the lack of stress. Several engineers I know went into Contracting. I went back to helicopters (who increased in workload throughout the pandemic). Cabin staff were also a dire shortage at one point and possibly still are.
There wasn't an exodus from airlines - there was a lot of lay-offs, a complete lack of support / loyalty and huge expectations by airlines as how they would recover with their ex-staff running back to them.