Frankly, the best way to send a message is to not own the stock....

Frankly, the best way to send a message is to not own the stock. He's acting within the law and perfectly entitled to award himself a massive salary. The flipside of this though should be less demand for the stock and a cost to him indirectly through a lower value for his shares. Founder controlled compaines are a double edged sword, you can get founders like Warrent Buffet or Daryl Holmes or you can get founders like John Karantzis. Clearly Kogan is somewhere inbetween, but nevertheless is not willing to simply grow wealth with his shareholders as he also wants to pay himself handsomely, even with non performance.

https://www.livewiremarkets.com/wires/how-to-compound-at-18-per-annum-for-16-5-years

Here is a good article on 1300 Smiles and the you'll note the massive contrast from Holmes and Kogan.