IMO anyone can criticize anyone they want as long as it is valid criticism. This goes for Martin Grime or the McCanns themselves.
What is interesting in this case is that all the supporters (with the possible exception of Brietta) are very keen for Martin Grime to be discredited to varying degrees.
Now why would that be if the dog alerts are not evidence or of any importance at all.
If the dog alerts were evidence they appear to show a cadaver was associated with the McCanns.
It certainly is a great mystery how there came to be so many alerts.
I have attempted to show that some of the alerts were not due to the activities of the McCanns but were probably a ruse by the PJ to elicit a confession. Will they ever admit to that tactic, a tactic that is used all over the world to get to the truth.
The question then becomes was Martin Grime aware the PJ were generating faked alerts? I then question the forum for an answer as to why the alerts to Cuddle Cat are so confused, there are different rooms described as to the location.
I go so far as to say the only alerts that are provable to be genuine are the ones the PJ attempt to recover corroborating evidence from. But I do also accept the alert in the main bedroom of 5A as it was the first alert made. They wouldn't be attempting to fake alerts on the first day that would make no sense IMO.