There's a specific spanner type wrench to remove the agitator. As many here have stated, machines with minimal electronics are the better option for down the road repair.

I'm the current caretaker of a Maytag set from the late 70's that came with the house. They are decidedly not pretty, but I had zero issues finding affordable parts, and performing general maintenance on either of them. The dryer needed a new tension roller and belt, the washers main bearing was, for lack of a better descriptor, grenadeded. It cost around $90 for parts, and a few hours of my time. It also allowed me to deep clean both appliances, which both desperately needed. 😅