Allow me to burn down that straw man characterization of my argument.
I'm not talking about set lighting, or cgi vs practical effects, or the gender, races, or sexual preferences of the cast. All of those things are irrelevant to the argument that Discovery and Picard are not real Trek. Star trek has always been politically progressive. That's not the issue.
So what is the problem? In my view, the following characteristics are fundamental to the core of Star Trek:
-An optimistic view of the future. The trek universe is supposed to represent a future of prece, unity, and scientific exploration. It's supposed to be a better, more enlightened world than we live in today. Something to aspire to. A place where everyone would want to live in someday. A time when humanity has moved past the more barbaric aspects of their nature and solves problems using scientific ingenuity while holding to their strong moral principles.
-The Federation as a force for good in the galaxy. A focus on solving problems with diplomacy first, and always trying to achieve peace and get out of situation where everyone walks away in a better position. They act intelligently, and put faith in their best people. Any elements within the federation that don't confirm to these ideals like section 31 shouldn't be glorified as the good guys.
-Faith in and an exploration of humanity. What does it mean to be human? What are the better angels of our nature? How do we foster positive personal growth in that never ending search for truth? Star trek doesn't wallow in darkness, with characters drinking and murdering and screaming and groaning and betraying and torturing. While these elements can be touched on as a way of showing how they can be overcome with the love, support, and wisdom of your federation colleagues, they should never be the main focus of the show.
-Intelligent characters doing the best they can in difficult situations. Star fleet is the best humanity has to offer. They make good decisions. The writing is should be smart and consistent.
-Respect for the canon that came before. Star trek is a rich sci-fi universe with a long internal political history and well established rules of how the technology works. This shouldn't be broken or reversed for the sake of laziness. The galaxy is huge. There are other galaxies to potentially explore. There are an infinite number of time periods where new series can take place. Yeah, it might be hard to make everything fit together, but it isn't impossible. However writers don't want to do that these days. They want the ready-made fan base of Star Trek to get pre-invested in their story without making those stories worthy of existing in the universe. They want all the benefits of the franchise history without respecting it.
Watch the Plinkett review of Picard. Hell, just watch the last 10 minutes if you're really impatient. It says everything I could say better than I ever could. It's not just a matter of taste.