If you call Ten Hag flavor of the month, you are just saying you are clueless. Already back in 2018/2019 he was super high rated because of the brilliant achievement with that Ajax team, at times playing Real, Bayern, Juve off the park. The team was very good, but the coaching was absolutely brilliant and of the highest level.
It actually has been throughout, he had to rebuild and Ajax did get very unlucky a few times since then. That Chelsea match at Stamford Bridge is one of the biggest jokes I've ever seen in the CL where they were literally killing Chelsea until the ref changed the game.
No he isnt perfect, no his side isn't perfect, but the funny thing is that some of Ole's most fervent supporters will be asking these things just to discredit him. Which makes 0 sense.