Perhaps rather than "can't try to view" it's more accurate to say that it's an ineffective lense to try to understand the motivations and dynamics at play. You can, and should, analyse the ethics of just about everything in order to make value judgements. Those judgements just have very little to do with people's motivations, and to assume a principled moral stance on the part of an observed actor will leave you baffled more often than enlightened.