Hes never been that much of a grinder tho, hes sorta like shox and f0rest to a lesser degree just has a lot of natural talent and intuition. I get the loss of motivation but his team is still 60% of what it used to be with him in the same role, it's not like this is a completely new squad with new leadership.
And no you dont lose skill, new talent just surpasses you and theres so much right now. Just look how deep the Danish and CiS scenes are. Players like hunter, shipz, brollan, zywoo young and hungry already showing amazing levels of talent from their respective regions.
This why sports careers are so short, people get worn out and the new, fresh generation takes over and the cycle begins anew. It's very hard to get back to the top once you've "fallen" just take MiBR, super hard working, very smart but since their players just arent elite anymore they have very little chance of becoming a top 5 team again with this core.