There is a variety of anticipated risks linked to the reduced activity during the pandemic and its effects on air travel as a whole. However, this kind of oversight might not be equally managed everywhere in the world

https://www.easa.europa.eu/sites/default/files/dfu/review_of...

I personally don't know about the not enough routine/repetition step, but the FAA did have a recommendation for pilots to reduce the use of autopilots due to similar reasoning.

https://nbaa.org/aircraft-operations/safety/faa-recommends-p...