Because that's the bullshit Manjaro promotes by giving pre-installed access to the arch user repository and pretending that they are just delaying arch updates by two weeks for additional stability checks.

That the whole concept of additional two weeks is bullshit if you don't do work in that time frame and just delay everything (even critical fixes) and AUR+outdated Arch is your ticket straight to dependency hell is what makes makes Manjaro bad.

That they then also managed to DDOS the AUR for everyone adds to their likability from the Arch perspective.

So in the end Manjaro is damaged Arch and Endeavour is an Arch-derivate. Which one is closer to Arch (technically it's Manjaro) is irrelevant, because one isn't even a properly working distribution.