Jesus promised us a place with him at death.....so not believing that promise for individuals who have claimed his name is also calling him a liar.
More could be said about this...but I think those who pray to anyone other then Jesus are on very unstable ground in the first place. ...He alone is sovereign....the departed have nothing to do with us once they are gone.
It’s sad isn’t it? I wonder if they even realize what they say. I’m inclined to think not. They simply repeat what they have been taught with little or no thought.