Al you can manage rocky stuff ok it just takes a lot out of your arms wrists and shoulders. If you are doing a short ride it’s not really a problem you just go a bit slower down rocky stuff. On long rides you do suffer, once tired your arms can’t take it, shocks seem to jolt up your arms it gets uncomfy, you get distracted and if you aren’t careful you crash. How far you can manage a rocky ride comfortably is down to your fitness and more practice helps I guess but you can ride rough stuff rigid, after all we used to, we had no choice.
….wistfully daydreams…ice cream run, mid 90s, rigid kona, vbrakes, xc race geometry, 135mm stem, 22″ bars, scary as hell but doable.