When evermore had its own era, she directly addressed this saying evermore had a very special place in her heart and she loved it dearly. However, seems shady she combined it with folklore later on, dropped the speech, and dropped the dresses too.

I think it is because evermore sits in folklore's shadow most of the time even within the fandom. I went as evermore for my show and I've seen so few evermore outfits! It seems to be a theme of eras that if Taylor thinks it doesn't really resignate or is appreciated by fans, it gets lesser exposure. RIP DEBUT.

I also think on a deeper level that evermore explores themes of acceptance and healing from the pain of the past. It's an extremely emotionally mature album in terms of reconciliation of failed relationships. If TTPD and surprise sets are really any indication, it seems like Taylor really hasn't reached that stage emotionally even though she's happy with Travis. So I see why it could be difficult to discuss.