Well him and his cronies are quite detestable and have succeeded in bringing happiness only to his rich pals, the rest of the population, well they have nothing but distain for them.
Having said that what is the alternative to him ? I fear that unless there is radical change, and I mean radical change to sweep out those whom really control this country, then any alternative to Prayut could be someone far far worse when it comes to greater economic damage and people's rights here.
So in summary, whilst Prayut is a loathsome character, his replacement could be equally as loathsome but potentially far more dangerous to the country, other than of course for the ultra rich and their supporter(s).