I honestly don't know if Giannis' game is going to age well. He is probably past his peak. Still an amazing player but worth a second super max? Not sure.
And it's not like their replacements were seasoned vets for the most part - particularly the receiving corps. If they don't get the penalty on the FG and get points in the red zone instead of the turnover...
The holding calls are a separate issue from whether or not he should be running kicks out of the end zone I think the risk/reward is worth it for a guy of his caliber.