Merc had time to get fresh softs too......before max, he would have had fresh tires and track position. Merc messed up.
The only thing mm did wrong was with the lapped cars, a big mistake.
Mercedes did not mess up in the end. They made the correct strategy call based on the RULES, because if Masi had followed the rules, either the face finishes under the safety car or Max had loads of backmarkers to unlap again n one lap due to his stop.