I had a similar problem with a couple of friends a few weeks back. They're a couple with a lot of debt, so they usually do everything they can to save money. Then the main water line started leaking.

I asked a few questions, and it turned out they could solder the pipes themselves and save hundreds on hiring a plumber. But the wife kept insisting that they were both too dumb to figure it out and by me saying it's easy to learn she just took it as me calling them stupid (which was a weird bit of gaslighting).

They didn't even look up a video on how to do it. I looked some up as a sanity check, and yeah it's fairly straightforward. Here's a really good video on it for those curious.