Question for those who have experience with mediums and knowledge of reincarnation.

Does anyone think there may be a crossover between those who visit mediums and get a reading from someone on the other side saying “everything is going to be ok and that you need to move on and heal” with the the facet of reincarnation? Do we need to heal because the death of a person will be reincarnated into someone else completely and it would be a waste of time to mourn the loss of someone who is going to get a different life?