Ahh see you gotta give it enough time plus hold back from comparing too much with WDW
while you're there at Universal IF you're on the fence about liking it or not. You were at 1 1/2 days which just isn't enough if you're wanting to really give it a shot at getting it all soaked in although it seems you've been before.
So the laid back part IS that you're not having to plan a ton there. I'm a big planner with spreadsheets galore but absolutely loved and craved how little planning you do over at Universal. We were a stressed out mess in May 2022 at Disney and could breath over at Universal. And OMG the gripes in the lines at Disney were disheartening, no one was happy and so many groans for all the waiting.
The all over the place you mentioned I don't get with exception to when we would hop back over to the Studios side to ride MIB and E.T. again. Otherwise with WDW because of the wait times, individual interests, planning of just when you're going to ride a particular ride, and having to select which ride when you do
Genie+ (and before FP+) you could be all over the place. Let's not forget the prior running to get FP with the Legacy system.
99% of people who frequent both Universal and WDW will say USO has the more laid back feel, in fact people who look to the Boards for planning of their USO trips often come with the question "what planning is involved with Universal" and the answer is "well not much really" you don't even have to worry about dining reservations outside of Mythos but even that can be had a day or so in advance most times. Toothsome outside of the parks in CityWalk may require weeks. Over at Disney it's like a battle just to get a place to eat lol and so much info to have before you can even step foot in the parks. And I say this having not toured with EP over at Universal until last year, all the other times were without EP so it's not as if I'm comparing always being able to skip the line.
Don't get me wrong I get where you're coming from but the atmosphere is just completely different.