Firefox treats insecure sites as dangerous and tries to tell the user to beware
I only get that behavior when setting HTTPS-only. If I dont, I think it may display a warning but thats it.
Are you saying that LibreWolf sends one without OS?
No they often take Windows 10 on FF ESR
Sometimes I do need to know iPad vs iPhone
I think that is a problem of the browser isnt it? And how does a “desktop site” button work? Does it change the UA or is there a different way to switch between the site views?
I dont know why this couldnt be done with a “safari on iPadOS” vs “Safafi on iOS” or a separate value for “phone”, “tablet”, “desktop”.
The OS is way less important than the browser and the form factor here.