i dont particularly like them for a couple reasons. the idea behind a vaccine is solid, its been done well many times. however, at one point the government put a law into place where you can no longer sue companies who make them for injuries. theyve gotten super sloppy with making them because they literally just don't care and it doesnt matter if they screw up. typically theyll use something like mercury to kill the virus, but often they just dont clean the mercury out, or the host cells arent even dead/cleaned out when injected.
the covid one technically isnt a vaccine and a lot of those had a lot of problems which is to be expected when something brand new is put into mass production worldwide with almost no testing compared to what would normally be required
people who claim theyre 100% safe are stupid. people who claim that vaccines themselves are bad are ignorant. the idea is sound, but the execution is often poor.