So you’re one of those people who have [sic] to read all the rules and stipulations.

Why on earth did you put "sic" after "have" when it is correct ...I am sure you would have preferred the incorrect "has"...' ...Of those people who have.... you are one."

Edgar replies: You have to ignore the prepositional phrase "of those people." That leaves you with "you're one who HAVE/HAS to..." Since "one" is singular, the verb has to be singular too. Hence, "has" is correct (according to what I learned in seventh grade English). Now some might say, "has/have" has to agree with "you're" and not "one." While "you have to" sounds right, "you're one who has to" sounds right too. And the later, with "you're" and "one" is the actual wording.