Manjaro was my intro to Linux, but now that I know more about it, I can’t recommend it in good conscience. Letting their SSL certs expire is something that happens (even though they could automate it), but telling their users to change their clocks so it works is a big no-no.
Worse than that is how they manage packages from upstream. Simply freezing them for two weeks is, in my opinion, the worst of both worlds. You don’t get timely security updates, but you still end up with the issues of being on the bleeding edge - just late. It also means that if you use the AUR (which is really one of the biggest perks of Arch-based systems), it’s possible that the necessary dependencies are out of date.
I think that if one wants “Arch with an installer” they should go with EndeavourOS, or try the archinstall script.