Watson’s final appearance for the Houston Texans was in Week 17 of the 2020 season. He sat for the next year because of a combination of reasons. First, he wanted a trade but the Texans didn’t agree. Then the sexual assault accusations came raining down and he missed almost two seasons of football.
Most people thought that it wouldn’t be an issue because he wasn’t taking damage for that length of time. But they didn’t consider the long-term impact it would have on his form. Watson already appears to be past his prime because he’s so rusty and didn’t benefit from elite-level practice with his teammates (via The Ringer).