His role in Stranger Things was so different though. If anything, his sweet, earnest character on ST would make it harder for people to see him as Richie. Comic relief characters are always audience favorites so I'm not surprised he's getting good ink.
Sophia Lillis is definitely getting some good notices too - IMO, Bev has the most interesting, emotional arc so she has the meatiest role in the film and by most accounts, she's terrific.