The only good Romulan is a dead Romulan, too, except perhaps in their introductory episode (where only Spock and a Starfleet guest star support this view).
Don't forget Starfleet itself. Spock cites what is literally institutional racism in his report; "Earth believes the Romulans to be warlike, cruel, and treacherous." Even when Kirk calls out Styles for "bigotry," it's only because it's pointed at Spock. McCoy is the only one to say their impressions of the Romulans might be outdated or even totally inaccurate, but he folds pretty quickly.