I'm really tired of repeating this but yet again it needs to be stated. 'If Nvidia truly did not want to offend Nintendo, the company wouldn't still be selling the Nvidia Shield TV'; which is a true console aka box that connects to a tv and allows game-play on said tv with a controller. Not to mention the Shield TV features a Tegra X1 same chip powering the Nintendo Switch! So again until Nvidia states there will never be another Nvidia Shield Portable, I and others still have hope. Link below proving that the Nvidia Shield TV is still available making all of your points straight booty.
There is a big difference between the Shield TV and Switch. The Shield TV doesn't compete with the Switch as it has no portable gaming aspect to it. The shield portable on the other hand could be used exactly like the Switch can, ie as a portable or connected to the TV.
Tegra revenue for the last quarter was $333 million just from Tegra sales - primarily to Nintendo. That's $1.3 Billion annually. I doubt they are going to risk that on the comparitive pittance they got from shield portable sales. if you saif they sold 200k portables at $250 each, thats $50mill over it's life time. Compare that to the $800mill thats probably coming from Nintendo Tegra sales per annum.
Anyway, if they are going to release it, where is it. It should have been released ages ago close to the FCC Filings. IF it's still being released why the long long delay (like almost 2 years )?
Also of note, look at the best comment in the reddit: https://www.reddit.com/r/Android/comments/6w6757/i_found_an_nvidea_shield_portable_2/
"Hey guys, a trusted source familiar with the matter told us it is a dev unit that will never be released (if that wasn't obvious already)."