Great thread!
Something to consider -- earlier in my homebrew journey, I avoided trying new techniques (esp. all-grain) because the most visible messaging was that you needed a massive garage, 15 burners, and a 7 figure income to get the "right" setup. I exaggerate slightly, but I think many of you know what I mean. A big tricked-out rig is awesome, but as so many have already said, it's not necessary. I do worry that the unintentional messaging around our hobby may turn off or turn away some great potential brewers. This is why I'm so glad to see the small-batch brewing subset, all-in-one-systems, and other innovations that create more ways to brew excellent beer. Visibility for a diverse set of brewing techniques will ensure a broader set of brewers.
For my part, once I discovered batch sparging, I learned that all-grain was way more accessible of a technique than I had thought.