The thing about Linux in the early 00s was that to a significant portion of developers, it was already obvious where things were headed. Anyone not seeing the potential wasn't really paying attention. And one shouldn't care what people who aren't paying attention think.
How likely is it that Fossil will displace Git? If you believe it is likely, then learning it, and using it for projects, may be time well spent. But even then, it'll take so long that you will still have plenty of time to adapt. So perhaps it is something you should keep an eye on, but not worth investing in now. If you find Git to be a pain, then a better investment right now, which pays off right now, would be to figure out what you can do to get along with Git, and thus most developers.
You have to treat learning as an investment. Which means, you have to think about about returns on investment. And just like regular investments, it doesn't matter what people who don't pay attention think.
How likely is it that Fossil will displace Git? If you believe it is likely, then learning it, and using it for projects, may be time well spent. But even then, it'll take so long that you will still have plenty of time to adapt. So perhaps it is something you should keep an eye on, but not worth investing in now. If you find Git to be a pain, then a better investment right now, which pays off right now, would be to figure out what you can do to get along with Git, and thus most developers.
You have to treat learning as an investment. Which means, you have to think about about returns on investment. And just like regular investments, it doesn't matter what people who don't pay attention think.