Is there some scenario where safety of flight might be compromised if you don't get that text sent?
I guess I am not seeing the point here. Is there a scenario where eating a hamburger or taking a trink might compromise the safety of flight? Not likely, and I rate it along the same lines of dangerous. Just like communicating on the radio, you do it when you are free to do so safely.

However, unlike that bottle of water you are drinking that may make you have to pee, a timely text message to ask your buddy where the best place to taxi is for restroom access before you land is very helpful! Especially if you need to land at IWA and are unfamiliar with the grounds .

You eat because you have a moment, and you are hungry. You text because you have a moment and you need a ride from the airport.

...remember, aviate first, then navigate, then communicate...THEN text.

That's just my $0.02