I don't see welding companies with a series of 8 hour interviews where the welder is grilled on all manner of welding edge cases they'll never see in the job, then further evaluated for 'cultural fit', and then expected to work 12-14 hour days - including weekends - when the job listed no such hourly requirements.

Welding, machining, carpentry, plumbing, hvac etc are all highly technical trades with a lot more certification and regulatory oversight than the overwhelming majority of software development careers.

Eh, do you actually know anything about welding, especially in safety critical applications? Thats not even counting crazy stuff like welding in the nuclear industry.