None provide value if management do not allow it to have value.
> t-shirt sizes
The whole point of planning poker is for people to guesstimate how much they think a task will take, and the poi t of doing it in a group is to allow the team to discuss the things they may not have thought about.
> 2 hour sprint reviews
I would agree that 2 hours is vastly excessive, but a sprint review is just a time for people to regularly meet and say what things are pissing them off, and what can be done to fix them.
If management know best and you have to use a shitty Jenkins pipeline with someone else's scripts, then it is pointless. But that's not the fault of the sprint review.