Something to keep in mind are legal ramifications. Apparently, some companies making suspect diets are investing heavily in legal services, sending cease and desist letters and calling individuals to threaten them with litigation. Veterinarians, breeders and people with a social media influence who have provided diet advice based on current science have all been targeted.
IMO there is a strong disinformation campaign coming from industry, not unlike that which occurred after cancer was first linked to smoking. It appears that there is heavy funding by the legume industry and manufacturers of suspect diets.
To keep up with current research on this issue visit https://www.alltradesdvm.com/topics/diet-associated-dcm/dcm-research-list?fbclid=IwAR1DCX5vNToay8o_t3oDSgc51mkz78Zyb1BOYtcMCJF7gH66ZJSUdWedRJw
