I don’t know what you class as ‘repairs’ if you think ‘most’ of them can be done with a screwdriver and a wrench. I do plenty of DIY and repair work on my house, and have invested in a number of tools, some of which would be completely out of range or over the top for an average family. I’ve had to teach myself some plumbing skills to fix drainpipes and other stuff - screwdriver and wrench get you exactly nowhere with that kind of stuff.
Also, I’ve watched more than enough Youtube DIY videos to know that many of them contain incomplete and misleading instructions, and that some of the people who make them are idiots.