Seems like the smart move to me. The thing with issue ads is that you can pretty much guarantee at least 1/3 of the people who see them disagree with them, or at least find them annoying. That’s why they’re “issues”. The point of selling ad space is to generate revenue, not boycotts.
Changing your policy in response to a specific ad so you don’t have to run the ad is a violation of the First Amendment. They should sue.