I didn't give the club a single penny for almost a decade following the rebrand. It made no difference in the grand scheme of things.
A boycott would only ever work if thousands of people who usually attend matches are prepared to make a determined stand and stay away, but history shows us it's not going to happen, especially if the team is doing well. This much we learned for certain back in 2012, when thousands claimed to be opposed to the rebrand but carried on attending matches, supporting the team and celebrating the successes of Vincent Tan and his Redbirds regardless.
If people feel inclined to protest, they will. If people feel inclined to boycott, they will. But let's not kid ourselves here - the simple fact is that the overwhelming majority of Cardiff City fans in the modern era will do neither.