Distributing any data is dangerous. Programs and devices have been compromised by malicious text, audio, images, video and other kinds of binary media (data), so even (especially?) programs. So I'd argue this - on it's own - is not really a useful thing to remark. The question is the characteristics and interactions of the dangers.

The comment you responded to is weird because of exactly this reason. Very terse without a whole lot of substance, coming off as interaction bait / similar. All too often do I see comments on social media where people post something that will obviously lead others into being cornered arguing something that was misleading in the first place. Best not to entertain these unless confidence can be had that they're being genuine and are phrasing like this by mistake / not knowing better.