That side note problem surely ranks as the #1 downside of torx. The practical solution seems to lie in restricting torx sizes to a much smaller subset, e.g. jum

That side note problem surely ranks as the #1 downside of torx. The practical solution seems to lie in restricting torx sizes to a much smaller subset, e.g. jump right up to T25 if T10 isn't enough (I think some fields actually do this?). But if you have the full set of drivers you can still mess up, no doubt. I wonder if the pin/hole tolerances of the "tamper proof" variants are tight enough to keep the slightly smaller out? Then it's not so much about keeping out people who don't own the right tools (gatekeeping) but about keeping out hands that happen to not hold the right tool at the moment, which is very well possible even if one should know better, and the right tool is available as well. You should never blame the user for a mistake that could have been prevented by better UI.