That raster is fluffed since Ampere is the generation NVIDIA split their integer math to dual precision which had little to no impact on gaming performance.
Realistically this is closer to half that.
If the clock speeds are correct the Switch 2 has 12CUs, meaning docked at 1GHZ its 3.072 (but performs closer to a traditional 1.536 TF systems aka Xbox One S / Steam Deck / PS4).
In handheld mode at 561MHz it’s 1.723TF (but performs closer to a traditional 0.861TF aka 861GFLOPs system also 2x as powerful as the original Switch when docked).
The benefit to the Switch 2 is DLSS for resolution scaling from 540p – 720p handheld, up to 1080p – 1440p and in rare cases 4K when docked, but Xbox One / PS4 quality games with access to more VRAM (12 vs 8GB) and a better CPU for modern day development.
It’s basically an Xbox One S+ with DLSS, which isn’t bad at all an in line with what I’d expect for something that has to be priced at Steam Deck prices or lower.