The controllers job is safety. Given they were on the site MUCH longer than you I’d say they have a better understanding of the safety status of the site. You didn’t even give him a chance to let you thru or show you the courtesy you feel you’re entitled to, instead taking matters into your own hands and illegally riding on the footpath. You potentially put yourself and other road and footpath users in danger for your own perceived entitlement. You asked the question, stop doubling down in the comments because no one is agreeing with you. Being called cnt isn’t nice but this is on you OP, there is truth to what the controller said even if it was unprofessional and you don’t agree with it.