So how many mistakes can a distro make before we boycott them? The extreme version of that is we all pay for Red Hat Linux and refuse to use anything less "professional". So it's a tradeoff, and I think this article draws the line very unfairly.
The only real benefit of Manjaro, as I see it, is a somewhat easier install path, but with the nascent archinstall script, that benefit is mostly gone anyway. If we're looking beyond the Arch-sphere, there's of course a healthy smattering of options with more on offer. You don't have to jump to Debian or Red Hat for quality and stewardship. Just because it's FOSS certainly doesn't mean there isn't real competition.