This is true and in addition to price it's another key reason why Tera will never appeal to majority who are by now used to players with screens (don't even know/care anything else ever existed).
However Tera still has a huge appeal to people like me who are primarily interested in best SQ possible and don't mind approaching listening to music in the manner we did way back when we only had vinyls.
Back then to go to your favorite song you had to get your ass off the sofa, walk up to vinyl player and replace the record and/or move the needle. Because of this most did not bother doing this but instead listened to full albums (which I think is the best way to listen anyway as it increases the chance you find other tracks you like that you would have skipped if you constantly keep looking for only few 'favorite' songs).
However, there is no questions people like us (Tera lovers) who don't mind this SQ for convenience tradeoff are in huge minority and a dying breed (convenience/shortcuts wins in so many areas today it's no surprise it would be the case here).
Interestingly enough however, there is an important convenience scenario where Tera does win vs screens - operating by touch without having to take the device out of pocket. I'm not aware of any player with screen that allows you to change between artist/albums without having to look at the screen while doing it, while this is very easy to do with Tera just by feeling and pressing those large buttons through your jeans pocket.