The problem is that you are basing your point on YOUR OWN perception that it is not difficult and that anyone can do it.
Other people look at that same work and see it entirely different.
Like I stated before, I have problems with measuring and cutting. If the work requires that, then I don't do it myself. Because I know that my inability makes that work far more difficult than it is for someone else. You argue that I just need to dig in and do it because it's easy. After 50+ years, I can tell you it's not easy for me and will result in more headache, effort, and cost than if I just have someone else do it from the start.
Also, a lot a folks will recommend a newbie unfamiliar with the systems to have someone else fix it because that way they can ask questions and often get hands on help. That's how I learned most of what I do myself - by asking a knowledgeable person to do it and watching them work.
Or the person is in a fix and needs the repair asap and doesn't have time to "go to youtube and learn".
Or the person doesn't have an understanding of the system and the responder suspects it might be a lot more complicated than a simple fix and so recommends going to a pro.
I would suggest that you post your recommendation to "do it yourself" on those threads, let others recommend "taking it to a pro", and let the OP decide for themselves which way to go.
