Depends on who user is. I hope a typical HN user can find a way to view certificate information even in a modern browser.
The problem is - in modern internet it is very hard to find out who is behind a particular domain: NS/A often point to a CDN or a cloud, info in whois is hidden and all you can see is 'Private'. OV/EV cert is often the only way to know that a domain like acmecorp-invoices.com is used by the same company as acmecorp.com and not phishing (registering a domain similar to the main company's domain is a bad but not uncommon practice).
One of a reasons to get OV/EV cert is to avoid you domain being listed as phishing - if would give a security expect no hints that your suspiciously looking domain is a legit one and not impersonation there is a risk that it would be blocked.
Phisher practically never use OV/EV certs on other hand (probably because they know there are little to no changes they'll get a cert with the target company's name in organizationName).
