Not only do you have complete choice of client software, You have complete choice not to upgrade, or to change the defaults, or in the case of power users, to roll out your own custom clients with whatever presets and defaults you want. That's the beauty of Bitcoin - nobody can tell you which software to run. Wanna set different p2p policies? No prob. Wanna preferentially connect to specific nodes? No prob. Wanna filter your own mempool? No prob. Wanna broadcast transactions that do not conform to the standardness criteria in any particular implementation? No prob. All this software is totally free. Nobody is making money off of any captive usershare. Therefore, wars over client software market share are virtue signaling at best and a complete waste of time at worst.