The great thing about the Steam Deck is the choice that gives users, whether you want a simple offline local experience or an all-out graphical masterpiece, there are so many options.
Take Cyberpunk 2077 for example, you can play on Steam Deck with a decent mix of settings at 30-40 FPS or you can use GeForce NOW via the Chrome browser and play Cyberpunk 2077 with Raytracing Overdrive and enjoy the visual fidelity of a £3k+ PC in the palm of your hands
The other advantages to Streaming over playing locally is of course the saving on storage space, but also the fact that you can play for 3-4 hours instead of 1-2 hours on a single charge
Of course, for the best experience on GeForce NOW, there is a cost, £17.99 a month or £89.99 a month for 6 months in advance, but considering a real RTX 4080 card will set you back £1200, it's still a bargain in our eyes.