A security engineer dealing with network security of IP traffic is a different skillset from a security consultant advising on human involved phishing attempts & cons.
Sorry but the author doesn’t even agree with you. Yours would be a fair take if the author in didn’t multiple times state or imply that their “security engineer” title gave them some relevant expertise. - I mean it’s literally the rather click bait title “I’m a security engineer…”
As it stands we have some self designated security expert (who claims regular writes about topics on digital security) that doesn’t even know that Caller ID can be spoofed.