There are definitely people like you are describing, but it's unfair to lump everyone who critisizes Mozilla, DDG, or any other privacy-focused company in with that crowd.

I will happily critisize Mozilla, DDG, etc when they come up short, but I will also happily celebrate their successes and continue to use and recommend their products as long as they don't stray too far. I want them to aim for perfection, but I completely recognize they will fall short.

There is a huge difference between critisism and condemnation.