I don’t disagree, the person you were replying to could’ve used better language that didn’t characterize Ubuntu as malware-infested and been more specific about what they were referring to. In any event, a couple scammy malware apps that were installed at the user’s discretion are not enough evidence that Ubuntu is a bigger malware risk than any other OS.

I don’t think people should avoid Ubuntu because their app store had the same problem so many others do, but I do think the fact that they make promises about the security of the Snap Store while also making the backend and review process less open than other Linux app stores is worth noting. Not to say there aren’t security incidents with other distros worth noting, but considering the popularity of Ubuntu, it’s not surprising it’s a bigger target.