Btw, plumbers are definitely there not for easy money, not for super profits, not for fashion or for the hype.
Therefore they have 1000 times much more of my respect than all random mediocre programmers who just leveraged the temporary extreme lack of human resources — and now wining about the end of "golden age". And don't even have enough condifence in themselves and no respect for the craft to think they will not survive yet another market downtime.