I watch a lot of XSTV and see that at a lot of concerts with the big stars are using, what at first looks like sound monitors, out in front of them. When I look closer, I see that these are indeed teleprompters with the lyrics and chords scrolling by. I noticed that Steve Winwood had an iPad on his Hammond with lyrics that he would scroll thru.

Billy Joel and Brian Wilson both have what look like special monitors for viewing lyrics and arrangements.

I personally use an iPad Pro for viewing all my music and now only have to bring my iPad to gigs and jam sessions rather than a milk carton container filled with sheet music. I will never be stumped again. I find that having this safety net is worth the self criticism and guilt of feeling dependent of having sheet music to jog my memory.