What the person means here is that on Linkedin there are a lot of (usually staged) comments or videos of people that "saved the life of that person that had $X

What the person means here is that on Linkedin there are a lot of (usually staged) comments or videos of people that "saved the life of that person that had $X and nobody employed and (s)he is now the best $Y". These posts are highly shared and commented upon. I don't think the comment was mocking you really, it was just a funny parallel (hope I'm not wrong).