I think you're conflating anxiety with practical caution and a recognition of lack of skill/interest in developing that skill.

Presuming you're not a surgeon, would you be willing to do an appendectomy on someone? It's a typical procedure that is well documented and at this point very routine for most surgeons, and with just a bit of research and practice, you can be doing all sorts of other surgeries.

Emotions AND logic prevent us from doing relatively routine/simple/safe things all the time.

I _can_ solder and do basic electronic repairs; I've done it plenty and in a pinch with enough time to research, I can probably pull it off. I rarely do however, because:

1. It's an investment in time and equipment that I may not have on hand for items that don't need frequent repairs

2. For the electronics I have, it voids the warranty, and if I screw up, then I'm on the hook for everything, so effectively there is a fine for screwing up

3. For most electronics I have around me, they are prohibitively complex and important enough to my day to day that living without them while I learn and research is quite costly

My point isn't that people are too anxious to do repairs, I have no idea how you took this interpretation. I don't trust my electrical engineering skills because I don't have them developed well, so I think it's prudent to not take on an electrical project like house wiring because I lack the experience to ensure it's done well and there is risk if it's done poorly. This isn't anxiety, it's a practical cost analysis. I don't personally need to do such repairs frequently (either by myself or with the help of a contractor), so an investment in these skills falls more under hobby than a practical skillset, and for the items that have needed repair, self-repair means then liability falls on me entirely, and if I do get in over my head, the cost for repair goes up as it's no longer covered under the repair warranty in many cases. That last point arguably is a fault of overly-broad EULAs and Terms of Use contracts, but it is the situation right now whether I like it or not.

Finally, as someone who did do electronics repair (and later programming), there are definitely issues that I was/am tasked with where someone unqualified tried their hand at it first and made what was a minor issue a major problem due to inexperience. I would have vastly preferred that the person(s) never tried to touch the issue since what they did just exacerbated the issue or introduced new issues instead of making it better.

It's a logical and reasonable cost-benefit calculation, and I can absolutely get even as a technically capable person why many GenZ wouldn't want to get into electronics on the basis of repair; it's the wrong introduction in my opinion and carries too high a cost of failure for most of electronics we use in every day life. That is why I think that a hobbyist approach, small electronics projects, etc, are a better gateway into electronics. The cost is failure is quite low (you just don't get whatever you're trying to build), the same skills for making the electronics carries over to repairs and builds the skillset and confidence for making the repairs, and it helps establish the wisdom to better assess if you can DIY or if a specialist is a better choice. All of the people I know who are big into car repair have that wisdom to know when it's better to take it to a shop that has the right equipment and experience versus what can be done at home in the garage.