Only time employees leaving is a bad sign had been when the company had been in zombie mode too long(few years) and haven’t delivered anything yet or still in alpha/beta stage with crappy deliveries no one is using or has no significant uptake.
Also, if there are financial difficulties, then a lot of people leave in droves and some actually come back after finances get better.
And people who are invested into “social impact” still care about their wealth and well-being despite living luxurious lives by the standards even of the developed world, let alone all other countries.