It is not my case, I have quite strong nails, fortunately, but you can play without nails in a quite pleasant way. See, for instance, Rob Mackillop in this clip https://www.youtube.com/watch?v=vfulgD6Lieo
. And there are others. If you search the Internet you will even find an explanation from Rob on his technique for playing without nails.
1972 - Kuniharu Nobe #8, 658/51, Spr, RW B&S, Tokio, JPN
1979 - Ryoji Matsuoka No.40, 650/51, Ced, RW B&S, JPN
1987 - Aria A558, 650/51, Ced, lam RW B&S, Nagoya, JPN
2014 - Hermanos Camps Master Nº 3, 650/52, CAN Ced, MDG RW B&S, ESP