I had 4 males living together that were my personal pigs. Our rescue has personally paired over 300 male pigs. Look on Petfinder across the country - there are male pairs all over. Guinea pig rescues routinely pair males. I've got 4 pairs of males fostering in my house right now.
Only uninformed people with tiny cages think males can't live together.
We are as gods to the beasts of the fields. We order the time o' their birth and the time o' their death. Between times, we ha' a duty. - Terry Pratchett.
"Men have forgotten this truth", said the fox, "But you must not forget it. You become responsible, forever, for what you have tamed. - Antoine de Saint-Exupéry