I agree with the rest of the community here- you got what you paid for.

I am afraid there is something in us that will drive us thinking that way. Next time you travel solo on a non-private jet, you will come across the feeling:

"is everyone having the seat next to them blocked a Gold/Plat member?"
"is everyone seated at preferred/ exit seats a Gold/Plat member?"

You're going to get that regardless which airline you fly in the near future.

I would say get over it and move on.