It still takes work. You need to still spend countless hours preparing for each game as nothing comes easy in L20, there are a lot of 5* teams around and some 6* teams that have tanked from last season and not forgetting the possibility of coming across other token buyers like I did last season and this season.
If you had a team like mine and you left it on autopilot all season you probably would not win the league and you most likely wouldn't win the CL.