Snowflake Royal Criticising Beattie and Schofield for their management record when they've been hired as coaches is pretty special.
Not all coaches make good managers. Not succeeding as a manager doesn't make you a bad coach.
Some people are just determined to be negative.
And I would argue it actually shows them in a good light - once you have held the "top job" the easy option would be to want to do it again and simply do something else, TV/radio/podcast for example waiting to be a manager again. Being prepared to step back down to just being a coach potentially shows an awareness that perhaps they aren't cut out to be a manager but their skill set is best served as a coach - but at the same time, they have experience of being a leader which they will have learned from.

 
      





