Two things are weird for me:
1. Switch 2 release in 2023 was always unrealistic (as technology became more expensive and games taking much longer to develop, a console lifecycle of just 6 years (before the release of a successor) is only possible if the console is a flop)
2. Talking about a handheld console market is a mute point. There is no handheld console market anymore when there's only one left on the market (and even this one is actually a hybrid). If there's only one, we name it (Nintendo Switch). We don't talk about a market as the market is Nintendo Switch (unless you broaden it to include the PC handhelds/hybrids). It is like if you talk about the population in an African country where hardly any non-black people live, for example. In such a country you dont' talk about "the black population" because the "the black population" IS "the population". However, should Sony, Xbox or someone else release a new handheld/hybrid console, then we can address it as "market" again.