He is showing flashes. After his disastrous run in the field early in his call up this season, he has looked better. And the bat is looking better than it ever has in the majors. Barring a complete crash down the stretch, he is the starting 3B next season. I don't know if he is the long term answer, but he has earned the right to be the hot corner starter for the Nats in 2022.
I think he was rushed in 2019 and 2020, but it is time for him to start producing and he is showing signs of doing just that.