Heard it alluded to on the broadcast, and then found this article that I used Google Translate on: https://cadenaser.com/2022/03/01/el-covid-ha-cambiado-los-planes-de-mohamed-katir/
He said COVID kicked his butt for a week and he had a high heart rate and chest pains. As a result, he passed on the Spanish Champs and will focus on Outdoors. While he got beat by Mechaal (who has run 7:30.82 this season) narrowly today in the final strides, I thought considering how many moves he made within the race and how aggressively he ran for the win, this is the best race I've seen him run since his amazing form pre-Olympics.
For the people who think he's going away after being on a crazy amount of drugs or whatever, I do not think you will get your wish. I anticipate he is running very fast 1500s and 5000s outdoors.