I do agree with this (and yes, in the US). I have yet to ever hear about a childless person complain about the “perks"of being a working parent when they need those perks for a different sick family member. It’s only ever been because they think they should get equal priority for a music festival, or regular down time, or spending time with dogs or friends. It’s a bad take, because it’s a false equivalency. In my (albeit limited) experience, if you’re childless, but you ask for the same “perks” to also take care of a family member, you are afforded it.