Believe it or not, people can desire different control schemes without desiring a slippery slope of BVR missiles and and Mach 2 warthogs. It's not as if hold-activation changes what the aircraft is actually capable of in any capacity.
Can a real pilot change their control schemes/Human-interaction-devices? No not really. If you care about precisely pretending to be a real pilot in a real whatever then that's fine and perfectly valid. It just means you have to deal with the control scheme as laid out or move on. Which I suspect is your point. If you're less beholden to that aspect, which the OP obviously is, which is also fine and perfectly valid, there are options open to them, because you know, this is actually a computer not a vintage plane and we can mess with it.