99.9% of Switch games work in handheld mode already, there's not going to be any change in games development.
"The whole "hybrid console" was nothing more than a marketing ploy for the get-go." - You can play the Switch on a TV, you can play 4 player splitscreen, it can be used as a home console.
It is a hybrid console, it is not a "marketing ploy"
By your logic the PSP Go was a hybrid console, the only difference being that the dock that allowed you to play on a tv with separate controllers was an optional accessory. And if that's a stopping point for you, you also can't play 4 player split screen without buying optional accessories on your Switch.
Just watch. By the time the last Switch is sold, most Nintendo Switches sold will not be able to be docked to a TV, and will not be able to be used as a home console in any way. That doesn't sound like a very "hybrid" console to me even if you're as generous with the idea of a "hybrid console" as you are.