Well I don't see it as fighting at all, just different people with different perspectives and ofc expectations.
Some more realistic or based in actual game development knowledge than other's.
In the end we are all gamers with affection for the sci-fi genre and the possibility of a game of the scope of Star Citizen is exciting to a broad range of gamers, not just space fans who like to fly spaceships.
Ignoring the continuous work of CIG and the constant stream of demos, video-updates and reports and dismissing it because it's not yet playable is misunderstanding the core foundation of Star Citizen as a game in development and a crowdfunding project that strives thanks to the showing of it's work in progress to the community.
Complaining that it takes time or that delays happen is missing the point completely. It's supposed to take time, you can't create such a massive ambitious game without running into problems that take time to figure out simply because no one needed to solve them before. There's a reason no other company has accomplished it by now despite the massive interest shown by gamers. What CIG already got established is a development model with the foundations on it's community engagement thus allowing it to not be hindered by money and more importantly time.
We have plenty of fresh examples of games that were rushed and failed horribly to make a good impression which in turn prevented or delayed tremendously the ability to reach their true potential. NMS and Andromeda come to mind but there are many more from several genres. These are games that are released and OK but leave gamers with a sour taste because they clearly could be much better if only the company had more time.
Like said before. CIG business model allows them to keep developing and adding content without the need to rush the foundations to create that big living breathing universe that Chris, and many gamers across the world always dreamed about since kid's.
The big publishers seem to be afraid of pushing for that "dream game" and keep rehashing the same old and limited tried formula that fails to make an everlasting impression.
As for gameplay in Star Citizen, there's underlying mechanics already in place that allow for plenty of it.
I'm talking about a physics grid that allows players to walk inside ships seamlessly which allows for multicrew and ship stealing/board, the zer0Gravity movement which enhances said boarding, the ability to fly very different ships and ofc the First person shooting part.
There are quest's with focus on combat and exploration mostly. That's only in the Universe module ofc. We have dedicated combat in ships and on foot and racing modules.
As for videos from ingame footage, there's plenty on Youtube to choose from the talented community of Star Citizen backers:
https://www.youtube.com/watch?v=crlbnw-KV6U
https://www.youtube.com/watch?v=J_XQGreE8pU
https://youtu.be/Rb4XE3c41Xg
There's also the gamescom and citizencom demonstration of the possibilities of gameplay that the developed tech allows them and the direction in which Chris envisions the game to play out.
Even if it doesn't translate at 100% in the end it's the direction that matters, showing that to backers is important because they are the ones funding it.