There's a page explaining this: https://moment.github.io/luxon/docs/manual/faq/why.html

Thanks. This link should be on the github page to be honest. For people like me who do not (always) click through if they don’t see an immediate need. Only now notice the url contains moment and this is part of moment.

It is linked on the Github page. There's also a link to a page making direct feature comparisons to Moment: https://moment.github.io/luxon/docs/manual/faq/moment.html

Well, perhaps the people who don't care to investigate just aren't a target of this library at the moment.

"at the moment"? No pun intended?

For me and I'm sure others one of the most important differences is immutability. This has been a big request from the community, but would be impossible to implement in moment without breaking much code which relies on the current mutability.

https://github.com/moment/moment/issues/1754