Maybe for your use case, but there are plenty of basic applications for which it works fine, if a little slow. The WSL2 implementation should make it fully competitive option for lightweight tasks like frontend web dev and introductory programming - if MS's figures on performance improvements are accurate.
WSL replacing Linux in the near future is, as you say, not a serious concern. But it being a viable alternative for a portion of the people who would normally use desktop Linux is quite realistic, I think. What say?
When it is released it will likely be as buggy as WSL is today. WSL is over 20x slower due to Microsoft's crappy filesystem. They are still using a custom kernel even though it is a VM now. I don't have high hopes about their terminal either.
WSL replacing Linux in the near future is, as you say, not a serious concern. But it being a viable alternative for a portion of the people who would normally use desktop Linux is quite realistic, I think. What say?