To steal the post of someone hire up this post that shared the entirety of the quote...

"Today, we want to warn every airline that uses Russian airspace, every insurer, and everyone who still uses Russia’s key airports: Russian airspace is becoming completely unsafe."

"Ukraine does not threaten civilian aviation as such – not a single civilian aircraft. There will simply be drones in Russia’s skies on a scale that has to be taken into account"

"We in Ukraine do not want innocent lives to be lost. That is why we are warning our partners: the safe days in Russia’s skies are over. It is important that this is heard by the ambassadors of countries represented here in Ukraine, as well as by ambassadors working in Moscow."

You cherry picked one line without context. His statement is a warning that non military flights will be flying through an active war zone, so proceed with caution. It's not a threat that he plans to attack civilian targets. He definitely intends to do harm, to Russian military and infrastructure, but if civilians put themselves in harms way, they may end up as an accidental casualty. That's different than some like Putin who specifically targets civilians.