If saying nice things about bad people were actually a problem, no politician in history in any western society would ever be allowed to rule. Pick any politician and you will find them endorsing, funding, supporting or any combination brutal dictators, apartheid regimes, terrorists like Al Qaeda (years ago), slave states, various factions fighting in Syria, Iraq (pre Iraq war), Qatar, Turkey, Dubai, Iran (pre islamic revolution or post), Israel, death squads in South America, Pinochet, on and on and on. To have any "serious" position in modern foreign policy is to support evil.
These "statements of support" are of course ridiculous 'gotcha' red herrings that actually mean nothing that neoliberal ideologues use to smear his personality and avoid talking about actual policy that could seriously effect the lives of ordinary UK citizens which they desperately do not want to improve, policy like for example the devastating and horrific one that is supposed to be the subject of this discussion thread.