You shouldn't hate on Finn and Millie cause they're so popular compared to the rest of the Stranger Things cast. It's not their fault. From what I have noticed they do more promotions that the rest of the cast. I mean Finn does a lot of photo shoots and was in IT. Millie overall is pretty popular for being one of the leads and being friends with so many celebrities. Keep in mind this is coming from a new fan that has been watching the show for 3 days and my favourite characters are Jonathan and Dustin.