If for no other reason than he's now got fans arguing with each other he should just stop.
If an employee was mouthing off about work stuff on a public platform you'd expect the employee to be at least spoken to if not disciplined.
For the chairman to do it sets the tone for the whole club and it's damaging. Trew did it and it demeaned himself and now Hardy is shredding his authority and reputation at as crucial a time as the club has ever had.
The man is less dignified than his playing staff who range from 16-35 time he grew up.