I really don't understand why anyone would eat processed food. I try to avoid anything with ingredients, just cook from scratch.
However, it would seem that fish and maybe other animals that I eat contain micro plastics so these are hard to avoid, unless I go vegetarian (definitely not an option).
Sticking to real, unprocessed food at least means that I am not contributing to the problem, i.e. if everyone did this there would be no problem, and no multinational food companies.