There are people who use git for its original purpose (kernel devs and very few others) and then there is the remaining 99% of people who essentially use “github flavored git”, using only three or four git subcommands and for the most part never needing to understand its intricacies.
Unfortunately, although they are using git-the-chainsaw-shotgun with all the safeties on, it’s nonetheless a chainsaw shotgun and sometimes they’ll run into issues where they or somebody in their company needs to be an expert and figure out how to un-scramble an egg, so to speak.
If a new VCS can solve the 99% case and never need users to fall back to understanding nitty gritty details, it could very well have strong takeup especially among people who don’t give a crap about what VCS they’re using as long as it gets out of the way and doesn’t make them think (game devs, data folks, etc).