How to keep the display permanently on while swimming?

That would make the answer to my question as:

Apple considers its customers incapable of understanding the concept of "battery life" and excluded the possibility of allowing customers to manage, according to their specific needs. iWatch screen-time

I was hoping someone would come up with a neat hack, or tell me that the watch display burns out easily, or some kind of good reason.

I suppose the answer makes sense, considering the customer hostile IOS 13 user interface changes to some native apps (like mail). But that's an entirely different rant; I knew what I was getting into when I abandoned android.

That does not make any sense to me.

How does the state of the watch-face display affect the water tightness of a sealed unit?