RRH = prettyWell when it comes to red river hogs and warthogs I would guess that part of the appeal and ubiquity of these species is because of how easy these are kept (not 100% sure on that though) which I think is quite a shame given that neither are of any conservation significance.
With the Asian suids like the babirusa and Visayan warty pigs these are obviously much more important to maintain in zoos for ex-situ conservation so I do think it is a really positive development that more zoos are keeping them.
Yes, definitely agree, I didn't mean that it was a novel disease but rather that its spread as an emerging infectious disease is novel and sadly it seems that it has recently arrived in South-East Asia and will in all probability severely impact wild suid populations:
African swine fever rips through parts of southern Indonesia
Warthog = TLK fame
That positive development, as you put it, also means that there are less available positions for other endangered suid species, like Javan warty pigs, bearded pigs etc. One if any tropical suid species is enough for most European zoos these days. And pigs aren't that popular among Joe Average zoo visitor.