It was unfortunate but unavoidable I think. Munoz was injured and also would have been exposed to waivers, I believe Garcia also injured. And there wouldn't have really even been time to summon an unsigned free agent (like Torreyes?) to add to the 40. Hopefully they were straight with him about what it was - a few days breather on an emergency basis while Wheeler was on leave. With most players you'd also say he got to enjoy the extra salary, but not in this case. I'm sure a few days of major league BP and time with Long didn't hurt though.
I would also agree that the current Phillies front office probably gives Scott Kingery very little thought, except when doing luxury tax calculations. He's still got 3-4 months to at least set himself up for a chance to win back his roster spot next spring, unless he gets thrown into a deadline deal as a $$ offset on some other bigger contract. There was almost no chance of him getting back to the majors this year given the length of his recovery time (and with Camargo, Stott and Maton all ahead of him). Three injuries (including Segura) just cracked the window briefly. He's still probably nothing more than an overpaid bench player in 2023 and the Phillies have no stake in his future as a baseball player beyond that unless there is a miracle turnaround to the Kingery of AA and one-half of 2019 (and even then they probably don't pick up his option).
His current performance in AAA is also very discouraging. If he is healthy and really ready to be back in MLB and had made good use of his extended ST he would not be struggling at AAA so much. I'm sure he needs this entire season just to shake off the rust, feel 100% (often that first season after the big injury is bumpy) and work on the mechanical stuff he still hasn't been able to work on.