Congrats on the new Civic! I agree with your evaluation. It really does drive well.
I've had my EX for a little more than 3 weeks ago. I've been pretty thrilled with the car so far.
With car-buying what it is these days, I bought it without being able to drive or get any hands-on experience prior to delivery...other than youtube. I'm used to driving something more expensive vehicles and am pleasantly surprised at how premium the EX feels.
You're right about the radio unit being basic, but it's pretty adequate using Apple Music over carplay which sounds significantly better than the radio.
I agree with everyone that this sound system is an area Honda should improve in the EX trim and/or make an upgrade available. I've seen a few people grip online about troubles with the new Bose system.
One other thing that feels cheap and out of place is the rear view mirror. It just feels small and plasticky and doesn't match the rest of the interior.