Git’s UI is difficult, yes, but I’m sure far more people are familiar with it at this point than Fossil. It would be far more inefficient for me to learn Fossil’s commands for what I need Git to do than just continuing to use Git, at least in the short term (and with no guarantees it’ll improve in the long term). If anything, a tool which goes the other way around - allows me to interact with Fossil using familiar Git commands - seems more useful to me.