I’d be curious to see some of the sources for the latter statements about modern adoption of å in non-northern languages.
I am familiar with the Italian ones mentioned, and afaik they don’t have official transcription rules, they have always been almost exclusively oral languages. In my experience , whenever a transcription was required (usually in an entertainment context, since they were never official languages), people would just make it up as they went along.
As such, I wouldn’t give too much weight to this or that random source using a weird northern-European letter to try and legitimise their arbitrary transcription; but if there is a convincing argument against this position, I’d love to see it.
I am familiar with the Italian ones mentioned, and afaik they don’t have official transcription rules, they have always been almost exclusively oral languages. In my experience , whenever a transcription was required (usually in an entertainment context, since they were never official languages), people would just make it up as they went along.
As such, I wouldn’t give too much weight to this or that random source using a weird northern-European letter to try and legitimise their arbitrary transcription; but if there is a convincing argument against this position, I’d love to see it.