It is not true. And if it is, it shouldn't be, and thus that is a bug.
Very few things affect hangar pets:
1. Aux power. Higher aux means faster launches of pets. Low aux is slower launches, and disabled aux means you cannot launch any new pets.
2. Flight Deck Officer Duty Officers can provide some other extra kind of buff to you or your launchable pets.
There's a couple other small things, but generally those are much more ship specific. Like the Advanced Obelisk comes with a unique console that is part of a set, and if you have the whole set on, any pets you use with the Obelisk can gain lesser versions of the four EPTX skills when you use them.