Lets be honest, it's not a new 'problem' is it? DIY repairs I mean. Remember (if you're old enough) back in the '60s and '70s and the majority of blokes would happily carry out basic wiring tasks, mostly to a reasonable standard. Likewise with plumbing, building, car repairs, motorbike repairs etc etc. It's dropped off quite a bit in the last 20 - 30 years as people don't have the time, inclination, or basic hand skills.
I maintain my motorbikes and always have done. In the beginning it was simply what you did, then it saved money, and now I do it because I trust my own abilities and judgement more than some random stranger who has a certificate. Most of the bikes I've owned are capable of travelling well in excess of double the national speed limit. Whilst I don't tend to do that these days the speeds that I do go at and the weight of the bikes would cause mayhem if something went west.
So thank heavens for the knowledgeable, skilled, and willing amateur. And thank heavens for the outlets that sell all manner of 'should only be for the trade' parts and equipment.
You will also notice if you read back through this thread that there are a number of 'professionals' who refer to Part P of the building regulations as a legal requirement. Oh the irony of the keen amateur who sees it simply as a regulation, and the professional who refers to it as a law.
The simple fact of the matter is that, as it has always been, if you are good at your job, keen to learn, and treat the customer properly you will do OK. If you run around wailing and gnashing your teeth about how hard it all is now, someone who's been around a bit longer will point out that it's a bloody site easier now than before.