Ofc. Device is past his prime. In the next 6 months/1 year you will see that clearly. Magisk will have to be the star of Astralis, while device will slowly fade away and maybe get 5 good series in a row and thats it.
Don't overrate device just because of his MVP's, tournament wins and being 2nd behind the GOD s1mple in 2018.
Remember , these things wouldn't have happened, if Kjaerbye would not have left Astralis. Magisk wasn't even the first choice for a pickup, k0nfig was.