Are these security concerns about Linux Mint valid?

If you're posting here, you've probably heard about the attack on the Linux Mint website.

I run Mint on my other machine, but haven't downloaded any ISOs lately, so this specific issue doesn't apply to me directly. But I keep thinking about this Reddit thread.

The main point of contention is this:

Quote:

Exactly. They were most likely breached into over CVE-2015-7547. Did I already say you shouldn't use Linux Mint? Well, here I am saying it again: Don't use Linux Mint! In fact, don't use any of these distributions who do not have a dedicated security team. Please, just don't! This again just shows that maintaining a distribution takes more than just developing your own desktop packages and creating ISOs. It's a matter of providing something people can rely on! None of these "I make my own Linux distribution because I can." distributions have their own security team. FYI, the vulnerability was fixed in RedHat, Debian, Ubuntu, Fedora, openSuSE the day it was announced! Simply because these distributions have dedicated security teams! Go ahead and downvote me into oblivion. But I will continue to repeat what I have said multiple times here: Linux Mint is garbage! Don't use it. It's a FrankenDebian by design!

(One link removed)

Here's where you'll have to excuse my inexperience, but please bear with me.

Do these criticisms make sense? It seems like the user who posted that comment has aggressively decried Mint at least a few times before. This does not make him wrong, but it does make me wonder.

The other thing that I read today said that Mint hides certain security updates by default. Why would they do this?

Should Mint users consider moving away from that distro?