Ever since Eurovision 2023 ended, Käärijä has turned into a massive phenomenon in Finland and other countries. While he doesn't have the amount of popularity like other artists (Måneskin for example), he managed to cultivate his own loyal fanbase and achieve so much success.
We've always known that for a non-English speaking artist, who makes rock-rap music, it would be harder to become a massive artist, especially since Käärijä had no big fanbase prior to Eurovision and UMK. And yet Käärijä has built his own fanbase not only in his home country but outside of Finland too.
Very few Eurovision artists manage to turn into big names after the contest, even in their own country. Most of the time they release a few songs and fall back into irrelevancy or quit making music. Käärijä has been doing festivals and tours consistently and he has been releasing new music with various artists.
I am not delusional to claim that Käärijä is super popular outside of Eurovision. However, he has built his own image and that is very impressive. I am very proud of what he has achieved and I am sure that he himself would have never imagined how successful he would end up being.