Maybe on certain domestic policies (though I think it's a stretch), but Saudi Arabia is in the dark ages, so it's not hard to be considered moderate there. He has been consolidating power with these "corruption" arrests. He is also destabilizing the region into chaos with an aggressive war against Yemen, a blockade of Qatar [1], and the forced resignation of Hariri [2].

1: https://www.vox.com/world/2017/11/6/16613088/saudi-arabia-pr...

2: http://www.independent.co.uk/voices/lebanon-prime-minister-s...