I've never heard of this app nor have I used it but that you can block most of if not all those scripts with an ad blocker, these are pretty standard tools, like firebase and Google Analytics, so you can see how your website, app performs, where apps crash, where pages 404, they help you keep your digital assets in check too. If you're a business you want to improve your service, and you want to track what is working/bringing you customers, if you don't your business dies

The majority of websites and apps use it or some version of it, so you'll likely have to boycott the entire web bar a tiny niche