Not just necessarily restricted to 2023, just in general:
What songs did you initially like but stopped liking (as much) after the ESC Grand Finale (or the ESC semi in which the song NQed), and what songs did you initially not like so much, but started liking after the ESC Grand Finale (or an NQ)?
For me personally, one song in this category clearly comes to my mind: Aijā (Latvia in the Eurovision Song Contest 2023). I initially wasn’t super into it (I didn’t explicitely dislike it, but I just found it okay-ish and didn’t vote for it but other songs).
But only after the song has NQed and the contest has been over, Spotify played it to me and I read the lyrics along. And for some reason, it really got me in this moment. It’s still not one of my favourites, but it was really interesting to me because I noticed how much more I liked it, even although the contest has already been over.