You’re the perfect example of the cranky experienced developer stuck in their ways and fighting against better solutions. Most of the issues you’ve described a

You’re the perfect example of the cranky experienced developer stuck in their ways and fighting against better solutions. Most of the issues you’ve described are consequences of yet more issues such as not caching with the correct cache key. I argue that all of the problems are eminently solvable. You’re arguing for leaving massive issues in the system because of… other massive issues. Only one of these two approaches to problem solving gets to a solution without massive problems.