I'm not going to allow my grandfathers enablers at his funeral
Why would not allow them to come to the funeral?
They're enabling behavior led my grandfather to an early death.
Its okay not let people that hurt your grandfather no to attend his funeral. It is best just to include close friends and loved ones.
How about you mind your own business?
That is really uncalled for and I don't appreciate being talked to like that. A funeral is a chance for people to say their final goodbyes. Just allow others to do this and then you'll never have to see them again.