Much the same can be said about narrowboats - finding a competent marine engineer is a total crapshoot. And the relentless drive for more complexity and flashy new technology is making it harder than ever to maintain anything yourself, assuming you gave the tools, workspace and the aptitude for such things.
i am a qualified bicycle mechanic but most of my skills are becoming obsolete with the new fanged technology like electronic shifting etc. None of it is necessary or wanted by all. It is just being foisted on us by profit driven companies offering expensive solutions to problems that don’t really exist, and selling us in the idea that we must have these things. And raking away alternatives.
its nothing new though. Many years ago - decades - E.B. While writes charming essay called Farewell Model T, lamenting the fact that cars used to be repairable by anyone, and how you could just order whatever parts you needed through a mail order catalogue like Sears, roll up you sleeves and fix whatever needed fixing. That simplicity was vanishing even in his day. It’s gone forever now.