that doesn't sound normal. You can get more grip by curving your hand around the neck so your thumb rests a bit lower like on the middle of the neck. If you have an average hand size, i think it can be fixed with pratice and technique, finger length is not the issue

I misspoke, I meant I can’t fret the low e with my thumb while also fretting the higher strings. I can mute it, I just can’t fret it Jimi Hendrix style.