Did Jesus offer support for praying to the deceased by speaking to people he raised from the dead?

He did often make comments like "arise" to those he raised from the dead, as I've discussed elsewhere. But as that post argues, it's likely that he was telling the people to move in some way in order to demonstrate that they had been brought back to life (e.g., telling Lazarus to come out, after which Lazarus walked out of his tomb). Since the focus in these passages seems to be on physical demonstrations that a resurrection has occurred, interpreting a phrase like "arise" or "come out" as a command to come back to life is at best a secondary interpretation. Jesus may have been simultaneously telling these people to rise from the dead and to move their bodies in the relevant ways. But a "may" scenario is a reference to a possibility, not a probability. I see no way to demonstrate that it's probable that Jesus was speaking to dead people in these passages.

Another way of evaluating which interpretation is more likely, aside from the factors I've mentioned above and what's discussed in the post I linked, is to look at how often Jesus, Peter (who did the same kind of thing in Acts 9:40-41), and other relevant figures speak to the dead elsewhere. Though scripture gives us many and explicit references to praying to God, there are no examples of praying to the dead. That larger context makes it likely, even highly likely, that these resurrection passages weren't meant to support praying to the dead.

And I want to reiterate a point I've made many times before. What does it suggest about the weakness of the case for praying to the dead when arguments like the one I'm responding to in this post have to be resorted to by advocates of such prayers?