I only use the glasses with the Steamdeck, Samsung Dex or to mirror my phone screen and it works perfectly. It drain the battery quickly tho(there are some solutions for that online). If you are looking for some multiple screen experience this is not it. These glasses only enable a big screen in front of you, that's it.

Which app do I need to mirror the phone screen?
And if the image that the glasses show is too big or too small, can't I adjust it?