I don't think you have to apply to be a coach or invest money to write your opinion. If you have a criticism of him, you can set these points aside because they'll otherwise just distract from your argument.
Also consider two things: that when things are going well, Boti is not far off free advertising for the club; and that 36ers fans are all very capable of calling for a coach's head without the "pied piper". I remember many of us thinking it was time for the club to move on Smyth before Boti eventually wrote something approaching a recommendation.
In this period, I think Boti's opinion of Clarke has been clear for a long time and neither coach is afforded any real concession which didn't seem so as true for those before them.
But has Clarke made strong efforts to build his personal brand and reputation or to endear himself to fans? Has he sold people on his plan or vision? Hasn't seemed to. Nor do the club seemed to have help him in this regard. Every comment from the Grantham that I've seen has seemed to distance them from him. Are we seriously going to have that for another season?
The crucial thing for me is that I don't learn anything new from Boti's columns this year. I already stopped reading the NBL's reports because they're pretty plain. The rumours are often online (forums, social media, etc) first. If I want to know that Diamon Simpson didn't play many minutes or that we lost, I've already seen it on Hoops right after the game from fans offering their verdict. I'd rather be finding out why it's been happening. And not just stopping after the first answer, but asking for the next answer. e.g., imaginary scenario:
(Boti writes that few minutes for Simpson isn't enough. Should've come back in at x minute mark.)
Jai: "Why only 22 minutes for Simpson?"
Marty: "He defends PF/C whereas there were times when the opposition went small and we needed more coverage at SF."
(Jai moves on to the next question whereas I want to see the following.)
Mythical reporter: "Is it a problem of conditioning or maintaining a certain pace? Is he not following plays as closely as you would like? If so, how are you combating that? Is it about effort levels? Radford called him on effort in the last game, is this a team-wide problem? Is he not spreading the defence enough? Would you describe your approach as reactive or proactive? Should you forget about wondering how Simpson is going to defend x off the dribble and wonder how x is going to defend Diamon in the paint?"
Mythical reporter: "Do you feel that on-court leadership has been an issue with a core of young players? What emphasis have you placed on trainings this week? What makes you feel that the current starting five is the best? What is being done to improve the defensive rating of the team?"
In summary, I have a problem with everything: bit bored of Boti's columns, don't go out of my way to read Jai's or those from the NBL, we complain a lot on Hoops, the coaches aren't doing enough, the club aren't doing enough, and so on!