I would not buy it. Make it as thin and as comfortable to hold as Switch and then i might consider. This device is super bulky.
I buy games from Epic all the time because it is cheaper than Steam and I prefer 5% cashback over useless Steam trading cards.
Epic needs more publishers on its store front. Many good games have not released there.
All games that I purchased on Steam this year, I would have bought from Epic, had those games be available there.
I am not sure if I should get this phone or wait for S24 Ultra. The main reason is S22 Ultra curved screen. Supposedly S24 Ultra is supposed to have flat screen which means zero to none change of cracking screen unlike curved screens on S22 S23 Ultra