...Most of the people who are arguing against the Keto diet in this thread outright admit it can be used to lose weight and live a healthier lifestyle. The argument is that the Keto isn't better than any other diet that lowers your calorie or sugar intake. That, and the longterm effects for using it as a general diet outside of specific cases or purposes (for example, just to lose weight) haven't been studied, and there is actual evidence that drastically cutting down your carb intake combined with high fat consumption isn't optimal.
I mean, if we're using personal experience, I eat an apple pretty regularly and have pasta once a week, but I'm pretty sure I'm not drastically less healthy than anyone on the Keto diet.
It depends what your metric of better is. If you can live sustainably on a calorie restricted diet, or a Mediterranean diet, then that's great and I wouldn't suggest switching to Keto.
But (and this is a combination of anecdotal and personal evidence) other restrictive diets make people miserable and don't yield results like Keto does.
Also, people concede it helps to lose weight but in a kind of 'just use it sparingly because you know it's damaging to your system' way, which I think is not true and have seen no compelling evidence for
For me the ONLY negative of Keto is it can be antisocial as you are eating different things to other people which can be difficult in some situations. But from a health point of view I've had personally great results (it just weight but blood pressure and fitness, as well as generally feeling better) so I do think it's an objectively great lifestyle. But so is med diet or vegetarianism. But no one seems to go out of their way to shit on those for no reason other than their personal biases