I work for a cybersecurity company, and I think that the method they used to check these links with the mentioned security companies was not a reflection of how they detect. I'm sure that many of these companies do not have these domains in their DBs of bad sites but if you were to run these products and then visit the site then heuristic detection would have likely flagged the sites.
I would have expected at least Virustotal to flag them if that were the case. It does more than just looking up in a database of known malicious URLs and I think the reputation of the domains is the key factor here.
Agreed with the other comments here. I would love to hear this as an engineering manager. I fear the work becoming stale for my team and push growth opportunities to keep things interesting.
I feel like this is a bit of a controversial topic. With better planning an architectural specialist is less important and people with domain knowledge on the product itself is better. Thoughts?