If 2005 or 2016 is anything to go by, Nintendo fans will NOT move on. Everyone was "done" with Nintendo in those years for the Gamecube and Wii U respectively based on discussion on NeoGaf/Reddit, due to the very abysmal game line-ups and those systems being disliked by many people by their final years, plus the systems were selling record low numbers at that point. Then by the time the Wii and Switch were announced and released, well, judging by how much they sold, it's obvious everyone came crawling back in bigger numbers than ever before.
In other words, Nintendo can keep pushing the Switch 1 till 2026 for all they care and we'll all "claim" we're done, but the instant they announce Switch 2 for release in 2027 with a launch day 4k Zelda with raytracing and a 4k 3D Mario and (hopefully) Metroid Prime 5, we will make the announcement thread reach 500 pages one day after the announcement stream, and you and maybe I will both be there on page 1 of that thread. No Nintendo fan is leaving lmao