When the object is out of common sight, you only encounter your self-defining vice moments when you're at your most vulnerable (because you willfully sought the thing out).
When you bring yourself into more frequent contact, you provide yourself with more training opportunities when your willpower is greater (because maybe you're already busy, or happy, etc).
Thus, even if you fall victim to the poor choices you're trying to avoid the same number of absolute times, you've drastically increased the number of times you make good choices. And the percentage of times you choose good choices over bad.
Counterintuitive, but I like it!
When I was 18, I worked at a produce clerk at a middling grocery store. Day after day of stocking fresh fruits and vegetables while watching the same customers (and even my co-workers!) come in and eat the same horrid prepared slop really motivated me to lose weight.
I lost 50 pounds in 2 months.
And also, speaking from experience, please, never attempt to lose 50 pounds in 2 months; my lung popped. Fortunately, I survived.
Now that it was in my face it wasn't about working around myself, bit rather deciding if I actually wanted and had the will power to do what I had claimed I wanted to do.
So, if you really want to reduce mindless browsing and find you can't and little strategies end up being ineffective, perhaps the opposite might be a worthwhile strategy.
All the best.