Jayco Jay Feather 25bh or Jay Flight SLX 267BHSW

There are a lot of campers with composite floors that have never had a failure. If it was a pervasive problem, you would hear about it more often. I would say that I have heard just as many concerns with soft plywood/OSB floors as with composite. And I would guess that the vast majority of both are due to water intrusion.
If you plan on keeping it a long time and do the required maintenance, this really should be of little concern.