I only said "taxonomically" instead of "phylogenically" because I couldn't think of the latter word. I would imagine a phylogenist's job to be a bit easier: fungi are more closely related to animals than to green plants; therefore, unless animals are plants, fungi are not plants. I'd say it's pretty darn convenient for the phylogenist that, at least in eukaryotes, everything can be organized into neat, sharply defined categories.