Rumor: Putin very ill?

No idea if this is real, or just a fake coverup, but all agree that Putin I'm the recent years (well before Ukraine war) Putin has been removing himself from a lot of social/political circles he used to be heavily apart of.

Now a rumor has it, that Putin is very ill with a blood and/or thyroid cancer.

Honestly, that scares me a bit, because I feel like a person that's going to be dead anyways, is more likely to start a nuke war. I mean, they don't have to live with any consequences, they'll be dead either way.