Those are fair points. I think the brain implants are probably bad, especially if you value privacy and individuality. Technology isn't generally inherently bad, but often brings with it moral hazards, and some creates hazards that outweigh the benefits.
The criticism was aimed at the fanboys who like Musk simply because they are exacting their revenge against their political opponents vicariously through him. I'm not certain that Musk is a bad guy, but I think the evidence points to him not being the champion of liberty that a lot of people seem to think he is. I hope to be proven wrong.