They do bring that up in the comics and the animated series ( at least the 3d ones). I’m sure more than once I’ve seen Megatron say something like " it’s them calling our ways deceitful, and since we fight for justice we are proud be Decepticons " or something like that.
Feeling a lot like Gonald lately (slrpnk.net)
Truly a moment of all time (lemmy.world)