Yep, Vegetarian riders will do fine ... until they get to Argentina!

Meat Meat and MORE Meat! Would you like a side of Sausage and Liver with your steak? (Parilla Mixta)
I like Sheepskin covers but IMO, a good base seat is the most important element to start with.
I've had Monkey Butt a couple times when I raced Enduro, and also on Marathon Baja runs, riding LONG days for 8 to 10 days in a row. Once it starts, you have NO TIME to allow it to heal up. A BIG problem!
ALL that was on dirt bikes with torture rack seats and without any sort of cover, no bicycle shorts used then and little knowledge on prevention.
We soon discovered products like Gold Bond Talcum powder, diaper rash creme, and other things to help prevent or heal up the Monkey Butt ... which is terribly painful. It's so bad ... it really can STOP your ride if you don't address it as soon as it appears. Can also get infected.
I've not had it in years but I'm proactive:
1. Apply either Gold Bond Talcum powder or Diaper creme (with Aloe) BEFORE the ride, and clean up, re-apply at lunch, again at night.
2. Quality, padded bicycle shorts help, they absorb sweat, minimize chaffing.
3. Quality seat
4. Stand up as much as you can!
But if you never ride really long days, then not so much a problem. Sheep Skins extend your comfort range, but I find they "pack down", and in the end, do very little. (I rode across the US ... and back using sheep skin cover on BMW R100RS) Many 400 mile days.
The more you ride, the tougher your backside gets and the further you can go without suffering too much.