Super Mario 64, best-selling N64 game and a launch title. The list can go on because once again, when a platform has lots of great games, people will buy them. The amount of great games explains the amount of console sales, not the other way around.
Look at the top-selling PS2 games. You'd think the best-selling ones would all be late games but 6/10 came out within 2 years of the platform's release.
What about PS4? Same thing. Second best-selling game is GTA IV that came out in 2014. Third one is Uncharted 4 that came out in May 2016, 1.5 years after launch. The The Witcher 3, 6 months later. And it goes on and on and on.
Of course it's relevant and your example makes no sense. This comparison is launch sales not lifetime sales.
I'm discussing long term sales and totals. The argument that the main difference explaining the boxed sales disparity is the install base is incorrect. A much more important factor is the split between digital and physical, and the fact that FF VII Remake was released during the peak of the COVID. These are much more relevant than a 60M install base vs 90-100M.
BOTW sold 4.7m in 6 months, ToTK sold 10m in 2 days. Installbase absolutely effects sales.
They don't have a major impact on AAA exclusive lifetime sales as countless examples show. Furthermore, the smashing success of BOTW is more responsible for those big numbers than the number of Switches available for TOTK. Games sell consoles, not the other way around. Halo 2 was one of the best-selling games of its generation and there were what, 25M Xbox sold?