I think I can understand why you are angry and frustrated, the accusations especially in the last part are in my opinion not justified.
As why blocking ads imdb is not as simple as you might think you can find more information here.
Amazon owns IMDb and they serve the advertising content over the same domains as the normal content. This makes it hard to avoid the adverts if filtering is domain based.
Note I am just a Blokada user and not affiliated with the project.