Welcome to the wonderful world of the FCC. Engineers don't run the asylum these days...lawyers do and ambiguity is what they do best.
I searched this specific radio...not much info available. The owner's manual is dated 2015. One review says it takes AA batteries and another says proprietary battery pack--gotta love the net. You "should" be completely legal to use all channels on this radio. I believe the FCC changed the power level from 0.5W to 2W to bring these radios into the legal side of FRS. Definately legal on channels 8-14 as they are low power under the old rules. I couldn't find the specific power output for this model--and it has a "power boost" button to increase power...I'd stay away from that. Uniden doesn't advertise the specific power output of this radio...nor does Amazon, C-Net, Best Buy, or others. You will never, ever, get 50 miles from this (or any other model)...I have a 50w radio with a big antenna 32' in the sky and find it tough to get that...no way, ever, a 0.5w, 2w, or 5w handheld will do that in real life.
Just about all bubble-pack radios, now (including the linked one) are now "license by rule." i.e. If you follow the rules, you have a license. Often referred to as "no license required" but really means you don't have to pay for a license. The only radios that might be an exception are the ones that include the ability to operate on repeaters (one or two Motorolas and maybe a couple of Garmins). Those would still be considered GMRS and would require a paid license.