@SwissJetPilot that video is on an EA113 engine, with a timing belt. CESA is the VL (or Gen 2) EA888. On this engine the water pump is completely different, located on the other end of the engine. The water pump on the EA888s is driven by one of the balance shafts, connected by a small belt. These water pumps are quite notorious for failure...even more so on Gen 3 engines...
Anyway doing the water pump job "requires" removal of the intake manifold. I put requires in quotes because it
is apparently possible to do it without removing the intake, but it's really not an easy job to do it that way because you're basically doing it blind for starters and secondly it's extremely tight to get in there. Removing the intake will get you all the room in the world to get the water pump off, and it's how the FSM tells you to do it...but removing the intake is a bit of a chore. Not hard just a bit of work. Also depending on how many injectors get pulled out with the manifold, that's the minimum number of injector seals you will need to replace lol.
The advantage of removing the intake is not only clearance though...it also gives you the opportunity to clean the carbon off the valves if it hasn't been cleaned in a while.
As a note the water pump does not need any "periodic" replacement. However it will likely fail eventually as it's known for failure. The mode of failure is that it leaks more than it stops working, so there's really no point in replacing it before you have to. If you were doing an intake cleaning you could consider replacing it at the same time. It is on the other side of the engine, not near the timing chain. The timing chain OTOH is a
much more important job.