Lots of others do too. Writer's Blokke, The Haven, Better Programming, A New Era, Checkmate, etc

That's my experience, at least.

My understanding that the suggestion to send drafts is not because of their desire to edit your work (which they can do anyway as editors). It's because pubs will list work by order of publish date. If you send in self-published work, your article will slot in with all their previously published pieces and may get buried.