Well, generally I say touch screen is a very poor input device for most big AAA games. A Switch has a built in sticks, and triggers, and further you can easily hook it up to a monitor for the bigger games. A Switch isn't for me, as I am not a huge fan of Nintendo hardware or software. But to me is its not a phone vs Switch issue, its more about Streaming vs. Native playing, and having access to Nintendo's software library as well.
"I repeat no one out side of Samsung and the X Cloud team know what the technology is all about"
Everyone has proprietary technology. The general way game streaming is done is known to everyone, processing is done remotely, the video is compressed, and sent over the internet to the application/thin-client on the distant end where its decompressed with sound, the remote application/thin-client takes user input and sends the input data to the remote process machine.
Nothing new with the technology, technically you could remote play some PS3 games back in 2006, although not really officially supported. Some of the technology has improved over time as well.
I see nothing wrong with streaming, if people want to do it... I stream in a pinch, but I personally would never pay for it.