Currently Online 
No.
Switch could've had worse third-party support and still probably outsell PS4 and Game Boy/Game Boy Color. Third-party support helps Nintendo but is way overblown.
Wii U as a console and some of the first-party games failed to grip the market, with the lack of compelling third-party support as the added nail in the coffin.
Switch 2 could get no Rockstar titles in terms of ports and upcoming titles and that is not what would keep it from hitting over 100 million units.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 122 million (was 105 million, then 115 million) Xbox Series X/S: 38 million (was 60 million, then 67 million, then 57 million. then 48 million. then 40 million)
Switch 2: 120 million (was 116 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima
