I think it’s a precursory question that is begged. Do those who think Saints as Dead, believe in the Communion of Saints? If so, is that Communion of the Dead, or the Living?
When Saint Mary Magdalene goes to the tomb, the Angel asks: “Why do you seek the living among the dead?”
I imagine this lady’s eyes looked up, and realized with heartfelt joy, Christ arose from the dead.
The Angel begged the question in rhetoric. Telling her that He did arise! The crypt that was sealed, was pushed aside and opened. Death no more! He prevailed as the Son of God.
Me and my humor. Did Saint Mary Magdalene not understand that from her 101 class at the feet of Christ, when in her sister’s (Martha’s) home? Bad student!

That’s okay, the Angel was there for her remedial training. Hehehe
Thus, no one prays to the Saints because they pray to the dead. If someone says to me not to pray to the dead. I will tell them, I’m not. Then if they proceed to tell me the Saints are dead. Then I’d have to interject, and say they must not be saints. For, you cannot be a saint, and be dead (that’s what’s called Hell.) You can be asleep as Christ’s body was in Death. But He was not Dead. Nor are the saints.
There are Saints who have a particular grace, without having to adhere to Death after they pass away (kind of lesser version of Mary’s Assumption.)
There are those also in Purgatory, who we’re called to pray for in as much as the Saints are called to pray for us.
But again, to say that to someone who doesn’t believe in the Saints having arose to Eternal Life, though through death. The very people who counter, also counter purgatory.
When people tell you not to pray to the dead saints (poor adjective. But will let this one slide.) You can then say, “I will pray for you.”
That’s the best motive and purpose. Because, you are sharing the Communion of Saints with them, by offering prayer.