sk89q/worldedit — comment on commit 5d3ca70318cfc1019e42282b3f960a0c96a37e3f
File:  line 0
By sk89q:

It was on 1.5 originally. I thought WorldEdit entirely compiled on 1.5 as well, although it's been a while since I have kept up.

And I wouldn't say that. Apple has historically bundled Java tightly (up until they deprecated Java entirely) with Mac OS X and you'd upgrade Java when you update Mac OS X. A lot of people who run servers are not people who would know a lot of this. There are parents who run Minecraft servers for their kids and other groups of people with similar characteristics who have limited know how in these matters, and starting up a server alone is a time investment. There have been definitely quite a few people who had trouble running some of my stuff in the past because the projects targeted 1.6.