It's a never ending battle. Lots of tools aren't as sophisticated as they claim to be, and the current mechanisms inject a lot of "other stuff" that can be easily found. We're trying to do this in a more novel way that's faster, less prone to needing frequent updates, and is more akin to how actual users interact with browsers. Definitely work to be done, but it's exciting to see, and I appreciate the good luck!
Source: Founder@browserless.io