One of those areas where there is sufficient evidence either way to support both arguments. Quite a bit of rhetoric and biased information chucked around by both sides. Which can muddy the waters.
To know yourself with any certainty you'll need to look at the evidence and weigh it up yourself. Deciding if one side or the other (or even both) is right or wrong. Too many people just listen to what they want to hear, or get panicked by someone saying something. You are already ahead of the game by being confused.