I'm not sure where you got this idea, the Soylent guide they send you when you get your first shipment even tells you that it's not necessary to go 100% Soylent. And, as far as I can tell, the website never says that you should eat only Soylent.
>3) I think it's stupid to consider this time as waste instead of time well spent.
Is the 10 minutes of making breakfast sausages really time well spent every day? That 10 minutes where I'm still somewhat sleepy, somewhat groggy, and pretty grumpy? I'd much rather have a serving of Soylent for breakfast, takes me 30 seconds to pour out a cup and spend an extra 10 minutes running in the morning, reading a newspaper, etc.
>4) Standards for food production are higher, I can touch it, I can see it, I can ask where it's from. Not sure where you have been buying your food. A banana I eat is not the product of a badly regulated industry, where hobbyists create mixtures of their liking.
As for the health of Soylent, you can find every ingredient and amount [1] for every iteration of it. While there's definitely less regulation in this industry, Soylent themselves have done a decent job of publishing the nutrition facts [2] and ingredients, is this that far removed from another traditional food? Can you really verify what pesticides were used in the production of that banana that you're eating?
[1]: https://faq.soylent.com/hc/en-us/articles/211343763-1-6-Form...
[2]: https://faq.soylent.com/hc/en-us/articles/200789315-Nutritio...