Yeah, my idea is to regard immortality as a subjective experience or as a phenomenon which is not absolute like we know it by definition.
Yes, I am aware why Einstein theorized it, but my point was just to say that time is not an absolute concept and in certain conditions people might experience it in a different way and that doesn't have to be based on their subjective processes.
I will check your link! Thanks a lot for your meaningful comment! Cheers :)