> I am not talking primarily about open source projects, but about closed source projects with LGPL components on app stores. You’d need the proprietary main object from them.
yes, and as I said if they are not providing them to you they are breaking the LGPL plain and simple. If they break their contract you're in undefined-behaviour land anyways :-)
> Also, requiring that your users have an Apple dev account before they can execute their rights is problematic at best. I am not alone in rejecting Qt on these grounds, in favour of some MIT or similarly licensed alternative.
You don't need a dev account to upload something to your phone since Xcode 7 or 8. Only to put it on the appstore. Prior to that, sure, it was hard to comply with the LGPL.