[wildfire]

However, git has all those features; whereas each of the other DVCSes had only a couple of them.

That is what made git successful.

The git cli is, comparatively, a lot easier to grok than it was at the start.

One thing about software, once you've had a (bad) first impression it is very hard to reformulate your opinion.

If the grandparent is lucky enough to find an advocate for git, who is willing to spend time with them, perhaps their opinion might change.