It isn't that they've made it where you can, they just use the same control panels for both.
I can't vouch for every one, but I bought one recently and did the following:
-When the grill was turned on, I put my phone on top of the hopper and picked up a WiFi signal (the name says something about GMG and DB for Daniel Boone with a bunch of numbers).
-Ordered a WiFi antenna from Amazon. this worked perfectly
-Removed the screws holding in the control panel and found where the small end of the cable shown on the previous link connects to the circuit board, and connected the two.
-Drilled a small hole in the bottom back corner of where the hopper is (it should be hollow if you look underneath the grill).
-Removed the nut from the coaxial end of the cable and connected that to the hole that I drilled in the previous step.
-Connected the antenna to the coaxial end of the cable that is now affixed to the back of the grill.
-Turned the grill on, connect to the WiFi signal from the grill on your smartphone. The password should be the serial number on your grill.
-Download the Green Mountain Grill app, connect, and enjoy.
The only thing I can't figure out is how to link the grill through my WiFi router, which is supposed to be possible.
It sounds like a lot of steps, but it is super simple.
Get the one that's non wifi and buy this
It's as easy as plugging something in. It does lose connection a lot but like said above it's worth it to be able to do the updates. Plus, you can check the internal temperature of the meat from your chair. But it's not necessarily worth $130. (To me atleast)
I ordered this one,
https://www.amazon.com/dp/B06WGMY7LP/ref=cm_sw_r_cp_apip_LYIOkEGtuyaKu