The embarrassment-trigger mainly activates via native Finns speaking rallycardriver-English, (and it seems to trigger in the Finnophile-bands singing as well?).
(Ah, I forgot, there's a word for the general feeling as well -
https://en.wiktionary.org/wiki/myötähäpeä)
But foreigners speaking Finnish with an accent - we'd be over the moon for somebody trying to grasp the language, we're far too prudent for any negative associations - we'd be in awe if somebody has the courage to speak the language, even with flaws.
That's one national quirk - if we're not perfect in the pronunciation, we're generally rather embarrassed to express ourselves, which in turn contributes to the stereotype of Finns being rather 'mute'
And how do we know about the correct pronunciation then? We don't dub any content (films, tv-shows) beyond under-7-year-olds'-stuff into Finnish, it's all subtitled with the original audio. The national differences are huge in Europe; Germany, Spain, France, Italy dubbing everything etc., and IMO it contributes tremendously to the nations skill levels in English, in a negative fashion.
And yeah, I've crawled through Kauans discography, and the musicianship, guitarwork and the melodies on some tracks do float my boat: whilst some of the vocal work is rather 'disturbing'. I've even introduced it to a circle of friends, which include musicians and vocalists of different genres, it was a mixed reaction, and trigger level varied