That's because EV certs were not only a pretty awful idea in hindsight (A, B), but also because humans aren't really good at checking the security and trustworthiness of a website (C) in general, which is why browsers have collectively started to stop signalling HTTPS as something to be trusted all together.
Except when it's an Extended Validation certificate, which requires the requester to go through a manual vetting process.
But apparently for some reason, Firefox doesn't show the EV label in the URL bar anymore.
That's because EV certs were not only a pretty awful idea in hindsight (A, B), but also because humans aren't really good at checking the security and trustworthiness of a website (C) in general, which is why browsers have collectively started to stop signalling HTTPS as something to be trusted all together.