IMO making personal comments to someone who is higher or lower that you in the work hierarchy is fraught with danger. It’s too easy for it to come across as creepy or patronising.
Much safer with peers, especially those you know well and who are the same sex.
And comments on clothes and accessories much safer than those on a persons hairstyle or body.
Because we live in a patriarchal and racist society, we need to be careful when we make personal comments. So because women are valued more for what they look like than what they do, men at work need to be very careful that they do not perpetuate that. Which is why the “ very lovely and radiant “ comment is so off.
Also because it’s saying to the interviewer
“ I know you think you are in a position of power over me, but can I just remind you that all that matters is how you look and that you are pleasing to the male gaze. I am giving you my approval, I hope you are suitably grateful. “.
A white CEO needs to not say to their black subordinate “ Oh I like what you’ve done with your hair , that’s unusual “ as it can imply that black hair styling is different and abnormal to the usual ( white ) styles.
Even though it might be fine from another black person who is a peer and a friend.
A CEO needs to focus on staffs ability to do their job and maximising their effectiveness and job satisfaction. Their hairstyle is unlikely to be relevant. It will also piss off your staff “ So she’s got time to comment in my hair but she hadn’t got time to approve my application for that training course/ pay rise “ etc.
These examples are very different from a woman saying to her female colleague who she knows well “ oh I love your red handbag , I’ve been looking for one for ages, where did you get it ? “.
Context and the power balance are everything.