Of course not. It means you misleadingly gave one side of the story. I doubt you'd like it if someone took the worst thing you ever did, defined you publicly by that, and didn't mention your efforts to make amends.
Look at this way. When I read your comment I thought, "what a monster. How is it possible that such a monster exists in this world." That's why I went to look him up. But when I read two or three other facts about the story, that feeling went away and was replaced by the feeling that I had been tricked. Had you mentioned that this happened over 50 years ago, your comment wouldn't have had that effect, because today's knowledge and moral consciousness, both of which you're relying on, didn't exist back then. But instead you wrote in the present tense, obfuscating that. You also used the word "proficient", implying that killing elephants was his main goal. And you put his stated goal in scare quotes. That just seems like a lot of misleading for a short comment.
40,000 elephants dead in the physical world with long-lasting environmental consequences = very relevant
1 man changing his mind after having done irreversible damage to the environment near the end of his career = not as relevant
He should be spending all his time and energy breeding elephants. Instead, he is giving talks about how he got away with this and making a living from it.
Look at this way. When I read your comment I thought, "what a monster. How is it possible that such a monster exists in this world." That's why I went to look him up. But when I read two or three other facts about the story, that feeling went away and was replaced by the feeling that I had been tricked. Had you mentioned that this happened over 50 years ago, your comment wouldn't have had that effect, because today's knowledge and moral consciousness, both of which you're relying on, didn't exist back then. But instead you wrote in the present tense, obfuscating that. You also used the word "proficient", implying that killing elephants was his main goal. And you put his stated goal in scare quotes. That just seems like a lot of misleading for a short comment.