I work for a software/web development company in the automotive industry. It's unbelievable how much of a website project consists of tracking. For one client, we have four different tracking systems running.
The thing that counts most is knowing who visits their website, what they do and how they do it. The website itself is almost an afterthought.
It's come to the point where basic functions like a contact form simply don't work when you have adblock or Disconnect running.
Because the typical use case of copying a few files does not really compare to the use case of having to copy 43 terabyte of critical data that may or may not have corruptions. It's nothing but wise to double check.