Here's the thing, you don't have a reason for complaints because you already decided to give him a chance, others still have enough reasons to express their opinion. Pathetic is what you call it, others call it warranted. Again there is no need to label people's opinions. If you don't like what they say or if it irritates you, a simple click washes the posts away.
Throwing rocks at someone is an analogy that I don't find fitting, if I am throwing rocks at you I am attacking you. When I complain about Sarri, I am complaining about him. It is your problem if you take it personally not mine. My whining is not aimed at anyone but the coach and the management.
And since you find the posts depressing it is also up to you to deal with that, if you choose to read them and get depressed then it is you who have to manage your depression, you can't go tell me stop saying things that depress me. I will give you a fitting analogy, let's say you listen all day on a radio station and this radio station plays often depressing songs, would you call the station and ask them to stop playing these songs or will you switch to another station?
I did not have any difficulty avoiding any label to your posts or the way you write. If I could do it anyone can.