Yes. As long as the reason is not a race sex etc. (I think protected category is a US term but the same idea applies)
His argument is that he was allowed with low value in the past. And somehow the fact that his Business plan is failing is a political choice. If your business is politics. Well no desision cant be classed as a political choice.
Worth noting, he is talking to the press. Rather than a court. This is just a desperate attempt to use politics to make his business valid again.