I voted 2020 would be peak year, but I haven't ruled out 2021 as peak year yet. I am convinced 2019 was not the peak year though. Switch sales are already up 26% YoY and the first week of 2019 was still benefiting from a recent Smash Bros release. Switch definitely has some strong momentum right now. It's sales are still accelerating. We haven't seen it's peak year yet.
curl-6 bet me that PS5 + X|S sales would reach 56m before year end 2023 and he was right.
My Bet With curl-6
My Threads:
Master Thread, Game of the Year/Decade
Switch Will Be #1 All Time
Zelda Will Outsell Mario (Achieved)
How Much Will MH Rise sell?
My Bet With Metallox