As long is it's not autogenerated then thats fine. The correct statement would be

"What Arch user actually like:" --> "What Arch users are actually like:"

or even "What Arch users actually look like:"

By leaving it as "what they like" you could be implying that they like these things, as in they enjoy them.

"Like" has both a verb definition and an adjective. And also a noun, but I've never once seen it used that way lol.