Unfortunately, there is still no workaround to get the Steam Deck to emulate a PS5's touchpad settings through the PS5 Plus ...

There's a considerable price difference between the PlayStation Portal and the Steam Deck; this isn't surprising, given that the Portal is a remote-play device/accessory rather than a handheld ...

It had extra features, such as a cartridge expansion to play Master System games ... you how to install Decky Loader and run PS Plus from the Steam Deck's library.