As I mentioned, "guy" wasn't the problem. But while everybody's so torqued about the word "guy" I'll take the opportunity for a gedankenexperiment. A poll among straight men, where the questions "is the word 'guy' gender neutral" and "how many guys have you slept with" are asked in random order, followed by "how many men have you slept with."
Because for all people pounce to excuse "guy" as gender neutral, this article only composes that with "he/him," which actually aren't gender neutral pronouns. Counterexamples to the "gender neutral" claim are far to easy to come by.