Do all fungi dislike acidic environments?
Fungi that grow in acidic media are well known, here just one reference: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC518635/pdf/jbacter00651-0183.pdf

About their spread, they are less common in mild environments (like you hands, or your garden soil) but of course in acidic environments, they will be predominant.