Nestor its a helluva lot better than that Genova valve on the dish soap lubricated stub out bouncing off the kitchen cabinet door 5 minutes after he leaves on a weekend vacation. My God Nestor what kind of hack plumbing do you think I spend my days tearing out of homes when they get tired of having leaks and decide to do it right!
Option 1 was using another compression connection.
Option 2 was using a valve that has a CPVC insert that glues onto the stub out.
By my calculations he's got enough of a stub out that the 3rd generation of decedents who inherit the house will be facing the problem you are worrying about.