I’m not the guy that you’re responding too but I’ll add my anecdote.
There was a somewhat off his rocker dude in my hometown that lived with his mom, she died, he didn’t notify anyone, buried her on his land (owned 15-20 acres or so, nothing large) and didn’t tell anyone. A few months go by and she obviously misses doctor appointments, church, etc so police check in. Then the guy says “oh yeah she died, I buried her, no biggie”. Turns out he violated a few laws doing this so he got some light jail time, she got exhumed, investigated to make sure she wasn’t murdered, then buried in a graveyard.
I lived fairly close to all this being in the same county and learned that in Illinois at least, you can’t just bury your dead, you have to go through some processes.