I think that if you conducted a survey, you'd find that many participants were in the stables more than a school classroom during their formative years. Probably explains why they are "good" horse people and haven't grasped the English language quite as "well".
Personally, it doesn't bother me. The main point they are making is still clear and that is the purpose of their words. But, I agree with your note on the external image of participants and the sport. Perhaps trainer/driver media training is one very small part of the solution of resurrecting the industry.