Yeah, given how often hacked email accounts are used to spam every person in the emails contacts, only suggesting that one should be suspicious of emails if they are not from a “known party” is misleading advice. As is the headline and the gist of post given, as noted here in the comments, that the actual malware isn’t in the jpeg, nor is the jpeg sent via email. Instead, the malware fetches it directly, without the user ever seeing it.
The post should be corrected to clarify that email of jpegs is not involved in this threat.
