Not exactly,
https://investor.gamestop.com/news-releases/news-details/202...
He has to hit both the market cap and EBITDA for each tranche of his compensation plan to vest. He could do this by growing the core business, or by doing a merger like the proposed eBay one. Even if such a merger was very dilutive, even value destroying, it could help him vest a tranche he otherwise would not, for more value than the dilution reduces his position.
To be absolutely clear, I hope+think in practice that he is aligned with shareholders, especially given that the market cap restrictions appear much easier to hit than the EBITDA ones, but it's important to be precise because there's so much misinformation going around.