I mean obviously sugar is not toxic. I think most people that do low sugar and no sugar diets are aware of that. Instead, they understand that there's way too much sugar out there and it is very addictive. That's the issue with this kind of anti-homeopathy reasoning, it's mostly just an attack on non-scientists who have their own theories and claims. However, science has a lot of gaps, especially when it comes to nut…
Sugar IS toxic if it hangs out in the blood too long, with adequately high levels. It produces all sorts of bad effects - from AGEs to diminished vitamin C uptake (and thus immunity). Sugar is uniquely toxic to teeth, there is nobody that will argue that.
This ... angry chef ... doesn't actually provide anything but confusion. I highly recommend you to avoid it and do your own reasearch.