Plumbing and other trades like it are the opposite of bullshit jobs, though. They require specific training and skill. They have tangible results that clearly improve the world (even if they're reactionary and small-scale, i.e., fixing a broken sink drain).
Yeah, don't dump on the trades. When you get down to the real nitty-gritty, most jobs are technically bullshit. If everything were reduced to rubble and ash tomorrow, CxOs, lawyers, programmers, HR, police, teachers, entertainers, salesmen, advertisers, and countless others become useless occupations.
Even doctors lose some of their cachet.
Farmers, carpenters, engineers, plumbers, electricians, etc all become way more valuable as they can actually rebuild the bits of society that are important to everyone.
I don't think 'would be useful in a post-apocalyptic wasteland' is the usual definition (or a very good one) of a non-bullshit job. It's more about how much genuine value the job creates in the real world today.
