The only time it's disappointed me was when I was trying to use it -- among a variety of other substances -- to deal with something other than sticker goo.
A few years back, a bunch of electronic devices were sold in the US that used some sort of rubberized coating that gave them a nice grippy feeling. Unfortunately, it turns out that after a couple of years, the coating degraded and turned into an incredibly sticky mess. I had a Grundig G6 Aviator shortwave radio that was affected, as well as a few other devices. It felt a bit like sticker adhesive, but trying to clean the stuff off with Goo Gone didn't work well (ultimately, isopropyl alcohol and a lot of elbow grease wound up being my most-successful combination).
But for what it is actually billed for, adhesive residue, I've had good experiences.
Note that Goo Gone, or at least the variant I have, has a quite-strong citrus smell, which I assume is there to mask some less-pleasant smell that the active ingredients have. So when I use the stuff, everything nearby smells like oranges for a while. Haven't had a situation where that's a problem yet, but thought I'd mention it in case it would be an issue for anyone else using it.
If it's a rubberized coating on new devices, it may be a similar formula that doesn't have the degradation problem. I haven't personally had any devices do that in several years (not saying that there aren't products that do, mind).
And I remember that when the coating was new, before it broke down into a horrible sticky mess in a few years after purchase, it did feel pretty good to me. And it seemed pretty durable -- like, it didn't wear through or anything.
Just that when the Stickyocalypse did happen, it was awful.
I remember reading on Reddit once that people who bought a variety of dress shoes with a particular type of substance used in their soft soles had something similar happen. For a few years, many types of shoes from different manufacturers would break down and degrade in the closet. You take them out after a couple years, and they just crumbled apart. Wasn't a sticky mess, but I bet that people who rarely wore those shoes were pretty irked.
Anyway, point is, the industry moved away from that particular fiasco after a couple of years when the problem came to light, switched to similar substances without the problem. I wouldn't be surprised if the electronics industry has done the same.
It really is amazing. Was able to scrape a LOT of gorilla tape (it's like FlexTape) residue off of a painted surface using a few applications of goo gone, and an improvised plastic squeegee last weekend. No scratches on the paint, and no more than about 2 minutes of effort on my part.