I am also in the "SCBs are not fine" camp, but I might be less extreme than many. My main problem with the current meta can be summarized with a response to this argument:
Open your mind and get it out of the smothering grip of having to categorize everything. Every ship is it's own category. And there are Builds. You can compare a ship to a different ship, with a certain build.
That's why we talk about "stock" or "maxed" or "A-graded" ships, not just ships. Because builds matter. They matter a lot. But a build contains ship+equipment. Which in turn means full price.
About ship categorization
I think in the beginning ships were clearly intended to have categories. And I like it. IMHO some ships should be better at trading, some better at fighting and some should be good allrounders that can be made into very effective traders/fighters/explorers with clever outfitting.
But as many commenters have pointed out, the way SCBs currently work leads this categorization ad absurdum. SCBs simply make the multi-roles too powerful. Want some proof? Jump over to the Federal Corvette thread and read the comments. People are afraid the Corvette will be a less powerful fighter than the Anaconda. Why?
Because the Corvette will be a dedicated fighter. It will probably be power starved and wont have the internals to load up on a gazillion SCBs. Of course this may turn out to be false, but I believe it highlights the current problem very well.
But on to my main point..
Builds
Yes, builds matter. They should. I love tinkering with the build of my ship until it feels perfect. Its one of my favorite things in computer games. But in ED there currently is NO build variety at all. There is one build which is the clear winner: As many SCBs as possible. For PvP there simply is no viable alternative at the moment, there is no counter to that strategy. And many people - me included - find that boring.
Its not that we cant adapt to the meta, I am pretty sure many people in the "Nerf SCBs" camp have PvP optimized Pythons or Anacondas in their hangar. Its just that having only one viable PvP build template has become stale.
Elite is a great game, I am sure most of the "whiners" dont want to ruin it. They want to tune it, make it even better and increase the fun that can be had with the game in the long run.