Is this even right?

It's not that long, so please read the whole thing since you're already here.

First off, I'm a high schooler. This is the second time I've heard something like this. When my paternal grandmother passed away a while back, my mom and maternal grandmother said this: "She passed during your school break so she wouldn't distract you from your studies. It's a blessing from God. She left early so she wouldn't be a burden to those left behind." ...Excuse me? Is that even a normal thing to say..? As soon as I heard that, I felt really uncomfortable. I asked them if they really thought saying that was okay, but my grandmother didn't seem to realize anything was wrong with her words at all. My mom seemed to realize it was weird but just... turned a blind eye? She didn't seem to have much of a problem with it. They didn't say anything like that after that, and I didn't try to dwell on it. I just went back to my daily life and forgot about it. But today, a teacher I know said something similar. "The fact that she passed away without even being hospitalized was, in a way, a help to me. I know a child shouldn't say this about their parent, but the longer someone is in the hospital, the more the family members nursing them go crazy too."

I'm a bit confused. Of course, unless a family is really well-off, long-term hospitalization makes the household finances shake and the constant caregiving causes extreme mental stress. That's a fact. But I don't know if it's just me, but the nuance felt like, "I'm glad they died quickly. Thank you." It just felt so wrong.

What do you guys think? Am I just immature for feeling uncomfortable or weird about what my mom and grandmother said? Do all adults think like this? I'm writing this because I'm curious.