Each "brutal dictatorship" is going to have their own nuances and idiosyncrasies but throwing down a blanket "don't deal with them" is flat out pointless.
We deal with nasty governments on a daily basis. From the gas we put in our cars to our phones to the clothes on our backs to our coffee mugs (but not coffee cups!) on our desks.
Then maybe people would think twice before doing business with brutal dictatorships in the future.
I think sentiments like the above are just dull feel good platitudes that don't address reality. It's a statement that is easy for others to agree with yet doesn't really confer a coherent idea or commitment.