I respectfully disagree with the trainer as well. Georgie would freak out if I stomped on the floor and probably have an accident from being so scared. I am glad you are using positive reinforcement
It takes time with some. Georgie is a smart little Yorkie boy but has had accidents over the years. I don't think the 2 things go hand in hand. Heck Georgie is so smart he knows he can have accidents and we will love him to pieces regardless
Good luck I am sure Bentley will get it