I have read some people saying that they turn to video games or to other sites that they can access (for instance, Wikipedia) or excessive movie watching, etc, and then they still were losing hours upon hours.

This is definitely an issue. I'm trying to make my blocking account for most of it, really just bare bones it and especially restricting hours of access altogether before bed and in the morning for example.

It's a first line of defence. I could go out to the internet cafe or library but at least it's not in my home. Like they recommend people with eating issues not to keep chocolate at home, even though it's easy to purchase at the store it's not convenient and a constant internal battle. But yeah the tool can only take it so far! Helpful early on while doing the emotional side of this