Even Pynchon's lightest work yet, the newly released Shadow Ticket, has me immediately reading it a 2nd time for many details I missed the first time through. Imagine the arrogance of shaming a Pynchon reader assuming they should never need to check notes or refer back to earlier pages.
It's more telling about the current state of affairs than the person who commented. Forgetting things is part of life, move on, we don't need daddy bezos sucking 1.21 gigawatts per request to tell you that some side character drunk a beer 12 chapters ago so you can enjoy the joke you just missed.