I would have to agree with this. I work in probate. Within the last 3/4 years we had a deceased client who was a very large gentleman.... the funeral directors, who were struggling to find a crem to accommodate him could not even remove the handles from the coffin to make him fit.... never mind remove him from the actual coffin. I do believe that there is legislation regarding this but I am not personally familiar with it.
Secondly, donating to medical science- 1. No offence but they don’t always want/accept the body; 2. If used by medical students they may not be treated with as much respect as you might wish for (not intentionally apparently but because they become so indifferent to the many bodies); 3. Often because only 1 limb is labelled- when you are returned to your family/interred the majority of the pieces may not be actually you (I have learned the above from a medical student).
Having said that ..... as far as I’m concerned, you can chuck me in a spare box when I’ve gone... and if, in the process, someone else could be helped because of me... well I’m all for it!!!