technical skill that you also have to CONSTANTLY relearn.
Another bit of sapphirescales patented hyperbole. Most of what I do, and have been doing, as a hardware repair technician has not changed one iota since I started doing it. The difference between sliding a IDE versus SATA versus NVMe drive in is not "constant relearning" on an epic scale nor is almost anything else about replacement type business, which is what, by direct description, is what's being talked about on this site 99.999% of the time.
Software installation and configuration, while it does require learning on an ongoing basis, is so much easier than it once and only keeps getting easier.
Every business has to learn new things, constantly, in order to keep up. Auto mechanics of the past 40 years have seen much more fundamental change in much of what they deal with than we have. Ours has, for the most part, been a variation on a well-established theme unless you're the one designing/inventing at the component level and/or doing diagnostics at "the level of the board."
If people are willing to pay you $125 per hour, then good for you. You couldn't make that and stay in business in this part of the country for love nor money. You might get away with it in metro DC, for instance, but that's not because of knowledge factors, but cost of living factors.
Of course, I take anything you say at all not with a grain of salt, but a boulder. You are the world's biggest exaggerator, and that's putting it very kindly.