Lack of replay button on mobile was the final straw for me. Limited skips and increasing ads were annoyimg but as someone who functions better when I have a soundtrack for life, not being able to loop a song when I knew I was heading into a signal deadzone and forced to embrace the silence of music-less driving, that was simply too much.
Not on mobile without premium. No loops, only 6 skips in an hour, if I remember correctly and ads every... 3 songs, I think. I've now been using modded Spotify for a while so. It's hard to remember and it's probably got worse since then.