That is probably true. However each customer will develop their own way of using the phone. I’ve only had my phone for about 6 weeks. My usage can evolve. The threat can evolve.
I’ve already suggested that someone going to a legitimate political protest would want to use both radio kill switches.
The radio kill switches are both important because both radio modules run unauditable / unaudited / unknown / untrusted code.
Probably the only person who would use all three kill switches would be a dissident in a country that is in a worse state than those that we are discussing (unless the person uses all three kill switches in order to kill the GNSS).
I don’t think I suggested that anyone would have hardware killed at all times. You don’t really need a switch in that case, but also in that case you should simply remove the modules (for the two radios). If someone is in a position of needing to do that, isn’t it great that they can? Try doing that on a mainstream phone. 