>>149319744UEFA CWC participant can win $125M for just advancing out of the group stage, plus additional $25M if they won every single match in their group.
So the difference between going through with minimal effort and actually trying is about the same as the prize that Slovan Bratislava received for losing every single Champion's League match this season and being dead last, which was circa 20M euros iirc. So for a club like Chelsea? It's pennies. They don't care.
Some clubs had the same attitude in the Conference League, like Betis which reached the final but was merely like 10th in the league stage because they knew they can beat most of the shitter clubs in the KO stage anyway.