It makes more sense with restaurant reviews. The business environment is so intensely competitive that any restaurant actually deserving of 1-2 stars would be much more likely to eventually go out of business.
So, over a long enough period of time, you’d wind up with mostly 3-5 star places, with some exceptions existing for restaurants that can survive without the benefit of repeat customers. (tourist trap places, places operated as some kind of money laundering operation, etc)
No, it’s not people trying to apply moral standards consistently, it’s about people thinking that cutting off arms to Israel would save the Gazans when high-end military aid is not actually necessary for an ethnic cleansing of a small land area, simply a luxury. Following the wishes of the BDS movement, at any time since the war began, would not save the Gazans in any way, shape or form when the Israelis can simply resort to even more indiscriminate, inexpensive tactics to accomplish their goals. In actuality, all it would do is remove what little leverage we actually have over there.
Not that I expect peace protestors to understand much about the logistics of warfighting, I am fully aware it’s just about identifying something negative and fighting it as hard as you can. Unfortunately, though, the lack of understanding makes your proposed solutions simply wishful thinking that fails to take Netanyahu’s precarious political position and potential available methods and resources into account. We see this with climate change as well, where we still have no actual viable solutions for emissions in Russia or India, simply because climate experts are not geopolitics experts.
The idea of imbibing potions whose recipes predate our awareness of things like radium or mercury toxicity somewhat disturbs me.