How kill Firefox startup

I don’t use Firefox at all and never will, how can I kill ‘Ksystraycmd’ for firefox only;

Can I uninstall Firefox and get same results or will that do harm


uninstall firefox should not cause any issues.
If you simply want to prevent autoloading, see here (or even tweak it for something else to load):

Thanx, rather than fooling around with start options, I’m going to uninstall Firefox,

not a fan of it, always use Goole Chrome