I certainly prefer to know what the chords are, and since my memory sucks, I feel more at ease when I can refer to a tablet (which I consider a step up from paper, but essentially the same result).
Not attacking you, just asking a question - do you use the tablet for the ENTIRETY of EVERY song? Even on a really straight-ahead song with few chords which you've heard several times?
Because that is what I see many people doing. I called Columbus Stockade Blues in C (because the 3d verse is so seasonal right now!), and folk (not all) were scrambling to find it on their tablets.
For some people, I think it turns into a crutch, which they COULD discard or lessen their reliance on, but they are either afraid to or just got a habit ingrained. If you are so uncomfortable that you feel you NEED the tablet on simple songs, you might want to consider if weaning off of it - at least on some songs - would help your development in other areas.
With or without your charts, do you have a sense for where the song is moving? You don't have to play every beat the first time through. Just hitting the 1 on the 1 beat every time it gets to the root chord is fine. Just keep in time playing the 1 beats and listen for when it goes to the 4 and to the 5, and whether there are any "weird" chords in there. Second time thru, play 1-5 when on the root chord, and just try to hit the 4 and 5 chords at the right time. And make a guess at the weird chord. 3d time thru, your rocking and rolling!
(I remember talking to pros about jamming on unfamiliar songs, and they said (paraphrase),
"The 1 for the song's chord nearly always works. If you only hit the 1st beat, people will think you are intentionally adding tension, when in fact you are just trying to figure it out!"
Pro tip - you'll know you finally got the weird chord and all the changes correct because that's when the leader raises his foot!
And are you incapable of leading the simplest song without charts? The first song I ever learned to lead in a jam was Roll In My Sweet Baby's Arms. Not exactly rocket science to master the words and chords of that toughie! If you are staring at your chords, I wager you'll find it challenging to call out breaks, or receive any other feedback from your fellow pickers.
If you are not familiar enough with the standards to "hear/sense" where they are going when, I recommend listening to more music. Get a Flatt and Scruggs collection or any number of other CDs (or however you listen to music) and put it on heavy repeat at home and in your car. It will get to the point where someone calls a song you've never heard before - and definitely never played, but when it starts, you can just sense where it is going. That feeling is SO MUCH COOLER than reading a chart.
All of this is intended as encouragement, not criticism.