While you might want to believe that a user would actually think about what they are accepting, reality is almost all don't. Even the more security minded people among us will start to get numb to the requests. Only the most paranoid would pay attention to all of them, and those people are probably already doing things that would make that sort of pop up redundant.

I think this is a very common trap we fall into, where we want to provide MORE warnings to people and let them use their judgement. However, there is such a thing as 'alert fatigue'.

In California, companies that produce carcinogens took advantage of this aspect of human nature; when California wanted to place warning signs about cancer causing substances, they realized they couldn't win the fight against the warnings. Instead, they fought for MORE warnings; they wanted warning signs for even very slight risk carcinogens. They knew that if the signs were EVERYWHERE, people would stop paying attention to them.

It worked. Basically every building in California has a warning that 'substances known to cause cancer or birth defects are present'. Since every building has the same warning, I have no way of knowing which ones are ACTUALLY dangerous.