1 - Now try a few HDR games, like Ori 2. The difference in screens really shines then, to me then it really feels like you're looking at visuals that the LCD model is simply incapable of conveying. Also I still have both devices so it's pretty apparent every time you're playing something dark on the LCD, the light bleed on the blacks or just the blacks being lit at all is much worse. Like this:
Moonlight/Chiaki Steaming
LCD 4 / 10
OLED 10 / 10 (Both will soon have HDR, support 90fps, and also can use WiFi 6 for better connections - everyone who's used these has stressed what a huge upgrade OLED Deck is for them, and actually running PC games at 800p, 90fps seems like a great way to get those 90fps on Ultra settings for a very long time haha)
Ally/Go 8 / 10 (No HDR or OLED, thus worse visuals, especially with HDR games - which is probably the main reason you'd want to use streaming - newer games that don't run native, could be 9/10 if gamepass was a big factor, for me its not though, but still won't have HDR so playing over PS5 streaming with HDR would be better on the Deck than over gamepass w/o it, and I'm actually not sure how well gamepass runs if you do go through all the trouble, and put on Windows maybe it is capable of HDR, but I'm just not interested in gamepass)