Repeating what someone else said, I would agree that's the elitist attitude.
I've only brewed with extract and fresh ingredients and haven't had a bad beer (have had bad ciders though). I typically try to find a base beer that I want to build mine off of and then add in everything that I want in a beer in split batches.
At this point I don't see the value in spending the $$$$ on an all-grain build out...maybe if a used build pops up locally.
I would like to see someone run an all-grain and an extract side by side and have blind tasting. I am sure there are reads/videos about that worth looking up.
I actually did an extract batch and an all grain batch of the same beer last Fall. Recipes for the two Irish Red Ales were the same except the all grain/extract difference. Both were good. The all grain was better. Using the BIAB method with AG is as easy as the extract method, with no additional equipment, except the bag. My AG process does take about 30 minutes longer than extract.