Let's define the claim precisely: "finally getting good" means a consistent uptick in critical and commercial results, not universal perfection. On that standard, the evidence is clear.
The Last of Us and Fallout drew mass audiences and real critical respect. Arcane won awards. Sonic and Mario films turned profits and didn't insult their source material.
My opponent must prove the trend reversed, not that bad adaptations exist. Bad ones always existed. The burden is showing the recent trajectory is flat or declining, and that, he can't do.