Absolutely no doubt that more aperture captures more light, therefore more detail/structure can be seen in those "dim fuzzies". I've seen those for myself. But no matter how big you go (unless one engages in AP), they are still dim fuzzies...just bigger and brighter dim fuzzies.
But you bring up the most important point...equipment aside, it is the observer that learns how to observe that makes all the difference. Which is why I'm quite satisfied with a small, wide field refractor. I just don't care any longer about turning dim fuzzies into bigger and "less fuzzy" objects. I'm more likely to take nothing outside at all, besides me and my eyeballs.
I'm quite fascinated with finding something like M31 naked eye and looking at it with averted vision, knowing I've already seen it many times over with some rather large scopes under dark skies. It still never looked anywhere near what photography reveals. Yet, I'm happy to see it at all and I still feel that magic every time, even without resolving it beyond it's bright core.
With my small scope, I'm now out seeing more, but resolving less. I know that's quite the opposite of most observers' goals. I have no goals. I no longer go out with any intention other than to have a look around, like a casual walk through a park and sometimes, something captures my attention. The Universe is just a big park and people use it for different reasons.
Large apertures capture more light and also resolve finer details.
When you say "no matter how big you go (unless one engages in AP), they are still dim fuzzies...just bigger and brighter dim fuzzies.", I have to disagree.
M51 in a 20 inich plus scope is a sight to behold.. Globular clusters explode. Open clusters show more stars and they're brighter, stars are 16 times brighter in a 12.5 inch than in an 80mm. Nebulae are big and can be viewed at higher magnifications at maximum brightness. when was the last time you spent a week with a 16 inch or larger scope?
I would say it this way: "No matter how big you go, there will always be dim faint fuzzies, they just won't be the same ones you see in a smaller scope. The dim faint fuzzies in a large scope are just further away.
I have always had small scopes to go along with my large scopes. I get the best of both worlds. I get the many virtues of a smaller scope, I get that "practice" pushing a small scope to it's very limits and I can apply those skills to the more challenging task of pushing a large aperture scope to it's limits. You, Norme and others have said that you had to go smaller to really learn to see. For me, I've spent plenty of time with small refractors learning to see and I still do..
My main message here is Sail7seas: Objects that are faint fuzzies in Mark's 72mm are much better seen in your 8 inch Dob. It captures 7 times the light, has 2.7x the resolution.. Don't give up on your 8 inch Dob.
Jon