Frequent pressure testing your Rolex diver . . . really?

[El Cascarrabias]

Seems I've read threads that if your Sub/SD/DSSD hasn't been tested in over a year and you're going diving that it needs to be pressure tested just to make sure it's OK.

Rolex now includes a 5 year warranty. I can see having it tested before the warranty ends just so it can be fixed under warranty. That would be prudent.

But has Rolex ever recommended a pressure testing interval? Are the seals that fragile?

Where's the documentation for this practice?