I have a 2018 MBP with i9. The fans drive me crazy. I remember once I was in a meeting with my PhD student who was sitting across from me. The MBP was on my desk in clamshell mode placed in between us. Suddenly its fans started and my student jumped from the chair because the fan noise was so intense. It's been more than 3 years and the fans are still noisy. Just to be sure, there is no lint inside it. I cleaned it just the last week.