As I have seen many people say in threads all concerning a mishap because of changing something e.g. a perfectly fine switch, for one that messed up on a flight soon after installation.

Don't fix it , if it aint broken. Of course here it would be 'don't change it if it works fine the way it is' . And as Al Stein says, when you use the finger thumb way, it feels as tho the Tx is going to drop, but then mayby I have a heavier Tx than anyone else.