That's not the implication at all, because the responsibility for the use of a tool lies with the wielder, not the tool itself. What it implies is that Thanos was too set in his ways to change. He'd been conquering planets and slaughtering half their population for a long time, and he only saw the Infinity Gauntlet as a way to do the same thing more efficiently, failing to consider that there was an alternative. Indeed, he was probably resistant to considering an alternative, because if he admitted that there was a more benevolent option than killing half of everybody, that would mean admitting that the many previous genocides he'd committed were not good and noble things after all, and he couldn't live with that on his conscience. He has to believe that he was in the right in the past, so he has to believe that doing the same thing all at once with the Gauntlet is also the right thing.