@lobermey I'm currently listening to that podcast and it is great. Though there are probably easier interviews with Belinda Beck. I will say she has tremendous knowledge on bones and exercise and Peter Attia is just excellent at guiding an interview and summarizing frequently as the interview goes along. So I'm glad you brought this to everyone's attention.
I believe her 3 published trials are among the most important studies done in regards to bones in recent years. Maybe the most important. All three showed and therefore verified that you can build bone with exercise and do it safely even though intense effort was used in all three studies.
As to the vibration plates. The low intensity vib plate, the Marodyne, designed by Dr Clinton Rubin is the one that was studied by Beck in the VIBMOR studies. The study has not been published but Beck has already stated in multiple interviews and talks that she was surprised and disappointed that they found no benefit from the device. Not sure why still not published, perhaps they are still double and triple checking their results?

As @stuffy mentioned there are reasons to be wary of vib plates designed for exercise at gyms etc. At least Dr Rubin says they may not be safe for various reasons, like your eyes and retinas and that they may exceed OSHA guidelines for workplace vibration. My personal experience is I bought one and used it for a year and lost a lot of bone that year. Not saying the Marodyne caused it but it sure didn't prevent it from happening. I now do a modified LIFTMOR protocol.