Well, that’s the beauty of this series.
Even if a game is bad, it still leaves some memorable positives. To me, FF2 is the worst in the series but I still have some fond memories of that game and the music on that one is still nice in this age.
I could get on about how FF10 isn’t the best by any stretch of imagination but is all opinion at the end.
FF10 has very good characters and a nice setting and theme with Spira, religion and the system around it that created the political scene in that world, but in gameplay is where it falls short. Not even the Monster Arena can save the gameplay and the tediousness of it. FF10 is the most tedious FF in existence, surpassing even FF8 in that category and that’s very hard to do.