Imo, about 70% work the way they are intended out of the box. Looking for a large cluster and using low power EP? Sure. Anyone can find moon or planets of course. Looking for something very faint and expect that a rough alignment done without care will get you there? No.
For the remaining 30%, I suspect there is 10% user error in there. Doesn't matter which scope they have, it will never work properly for them. Because the problem isn't the scope.
Another 10% are just not good with electronics. A Dobsonian manual would work well for them, but they push buttons having no idea what they're doing, and couldn't work a smartphone let alone a microwave. If so, this scope type isn't for them.
Then there are 10% that have gremlins. Inconsistencies in the scope production or the electronics or something where it just isn't working right. Took me five years of solo frustration to find out my biggest problem with goto alignment was a wrong setting in the submenus that LOOKED like it was set right, even on default, but wasn't. Fixed it, everything worked like a charm.
But going back to the 70%, you do have to learn stuff, it isn't all automatic. You'll need to know your coordinates to have good alignment. You'll need to take the time to level your scope when you use it. Choose the best stars and know where they are. Learn to centre properly and which order for the last movements before saying "align". Using a low power EP when doing your first GOTO rather than putting in high power and wondering why you can't find anything. The scope will get you close enough that your target should be in the FoV with a low power EP. If you have it on max, no, it won't be dead centre everytime. Every step allows for a small margin of error.
You will also find lots of advice by people who have never used a GoTo about how you don't learn the sky, it's cheating, blah blah blah. Like they are still using Galileo's scope and haven't upgraded any of their optics, setup, or use an app to plan their viewing. I have zero patience for such snobbery. You do learn the sky, you do see the stuff you want to see. More people have given up the hobby by not being able to navigate the sky with a manual scope than ever even attempted by those using GOTO. And has a higher failure rate. Rant over.
Last point for your GnG though...note that the 8" is, again imo, portable, not really GnG. It is still bulky and heavy. Hard to find a good cheap case for it given its size. Also overweight for the deafult mount and tripod, in case you want to add any equipment. If you are going from house to car, car to spot to setup, and not a lot of lugging in there, the 8" is great. But the 6" is truly GnG. You give up aperture, and not insignifcant in a SCT design, but if you are goign to multiple places or have to carry it from parking lot to viewing site, blah blah blah, a 6" is sweet spot. I have the 8" and would buy a 6" in a heart beat as just an extra scope to have if I could get just the OTA. For my son, we went with the 4" which is uber portable. And has the maksutov design for killing planets well.