A lot of the initial criticisms have been fixed in further updates. Now the connection is very stable, works with outside networks. They just implemented PS Plus PS5 streaming (so without connecting to a console).
Are you really cherry picking some big media outlets like IGN? It was another IGN moment where most peoples opinion did not match what IGN rated. They gave the Steam Deck 7/10...
At launch it was not well received, with many issues, being overpriced and the only compatible earphones being very expensive and not available too. It was an embarrassment through and through at launch across almost all media and users. I've read and watched reviews and opinions. You are not being honest here, as some of the biggest issues are fixed just recently and some over the course of 1 year since it launched.
You are right, the description on the product page is only talking about Home Wifi and playing at home. Which led me to believe it cannot be used remotely. Only when looking at the FAQ they clarify it can be used anywhere.