Yup.

There are so many Americans that don't grasp that this change can happen. Or understand the concept but outright refuse to have patience. And like you said, it's A LOT less effort, a LOT less time, and WAY more possible to primary and change the Democrat party than to cross our fingers for a random 3rd party to start actually doing something and winning some elections and getting reps in the House and Senate.

I've been alive for a while. I watched conservative voters change the Republican party to the fascist traitor party it is today. You can absolutely change political parties.