If I lived in a middle eastern nation, worrying about my daughter seeing a few seconds of porn would be so far down the list of worries I have for her that it wouldn't even register.

I’m not in the Middle East, but I don’t think the question of the appropriateness of displaying pornography in public places is country-dependent.

There's a huge difference between "appropriate" vs "harmful".

How do you define "harm"? I think there are reasonable definitions by which it would be considered "harm".

Many jurisdictions worldwide criminalise exposing people to pornography without their consent – see for example, Sexual Offences (Scotland) Act 2009 section 6 [0] – and especially doing it to minors. Criminalising doing something to someone without their consent constitutes an official judgement that such an act is harmful.

[0] https://www.legislation.gov.uk/asp/2009/9/section/6

it could be minutes if traffic