I see where you are coming from, as someone who is somewhat active in the programming world.
However I think you are missing the point. No one is saying not to use Git. Just because it is industry standard doesn’t mean that people should be normalized to it, either. Yes, it opens a lot of doorways, but we’re limiting the creativity of developers to come up with their own solutions. We don’t progress if we are all looking at the same screen.
I like that Roblox is trying to implement its own version, but the audience is too modern and it seems as though live editing is a lot more popular. Some people here have voiced their view on how this can be messy, unorganized, and dangerous. But believe it or not, the new generation is using google docs and word on the cloud more than they do offline! If you don’t believe me, walk into any high school! It’s all chromebooks; even in university, I can only access my files via the cloud, and most of the collaborative work I do is done using either google docs or some online live-editing platform.
We are experiencing a shift in the way we collaborate online, and I think Roblox needs to account for this. This won’t make third-party resources useless, so I think the concern should be in consideration of the future for Roblox development.