Incredible, actually always wished for it and was disappointed that the movie adaptation only encapsulated the first 3 books.
Although nobody plays Count Olaf better than Jim Carrey in my respectful view. NPH was incredible but I'm partial to Carrey's portrayal. That scene with him "gently letting Meryl Streep go quietly into the sad night/lake to join the the human-eating carnivorous leeches and her late husband" was so fucking sadistic and yet comedically beyond compare. Chef's kiss, I love her just for her portrayal of Aunt Josephine, I literally cannot imagine anyone else/better for the role.
Top shelf casting!
Edit: it would be darkly humorous if Streep made the same ulimatum to the Unfortunate Events showrunner or director or whatever about only doing the scene once like when she has to make Sophie's (impossible) Choice in that namesake film due to the emotional turmoil she purported to experience in the method acting/nature aspect of her performance in such an emotionally outrageous dilemma but in this case because of the sheer lunacy/dark humor of the situation