Why can't the government buy its own debts and cancel them?

https://beehaw.org/post/11584178

Why can't the government buy its own debts and cancel them? - Beehaw

Or does the government already do this? If so, can anyone explain like I’m five?

Isn’t that just paying the debt?
Came hear to say exactly this. I’m no expert, but this sounds like the right answer