Well, he pigheadedly refuses to admit #monero is a better privacy tool too, so his opinion as it comes to opsec is worth what it is worth.
Not much.
Discussion
Yeah true, but on Monero he's ideologically tainted by his religious allegiance to Bitcoin. Router software? There's no excuse he can make there, simply ignorance and negligence.
I've often found that categorical mistakes tend to extrapolate into other areas.
His denial about Monero is a failure of elementary critical thinking and intellectual honesty. We shouldn't be surprised that it bleeds into other areas.
While in one case, as you said, it is a religious-dogmatic issue, the fact that it's become so for him is evidence of a failure of critical thinking.
That same lack manifests in the scenario of the router.