It is painfully obvious from your message that you haven't ever been in an executive position. As an exec, you would ask that person to come for maybe the first two or three meetings, tops.

Then you acknowledge that said person is lazy, condescending or something else but definitely not a team player that's for sure. And you move on.

Then you attend a decision-making meeting where you are to recommend a handful of people to your exec peers for equity, raises, spinoffs or carveouts.

Guess whose name won't even come to your mind when assessing the company's rising stars ?

Edit: "I neglected meetings that seemed unnecessary" see that? That's condescension. Neglect. Laziness. No conspiracy needed when self-undoing is a certainty.