I mainly use oratory1990’s presets or the 2019 Harman target for IEMs on autoeq. I find that for some songs, the common reduction in the 8-16khz range causes a certain bloated and muffled feeling. However, for other songs, it makes the song so much less fatiguing to listen to. This leads me to wonder if using different presets for different songs or genres is common.
It‘s the job of the mixing engineer (more specifically: the mastering engineer) to not make you want to use different EQ settings for your headphones for different songs.
But since they’re just human, they won‘t perfectly succeed, and it‘s normal to somewhat want to adjust the EQ for different songs, especially if they were not mastered for the same release/same engineer/same album/…