You are right. It is a concern not just in terms of training, but for all aspects of the industry. Experienced resources are becoming increasingly rare.
I have to say that more and more young people are becoming interested in cybersecurity. However, this field is still evolving. It is extremely difficult to find good resources with experience.
As I mentioned, I am a lecturer. We should not forget that this requires expertise in the subject matter taught as well as teaching skills. Those are two different things.