I'd guess part of the reason he got downvoted is this: "The increased CO2 levels in recent years (slightly added to by human activities) [...]".

Pretty much all of the CO2 increase above pre-industrial levels (280 ppm) is due to human activity.

99% of the time when someone says otherwise they are going to continue with a bunch of other equally inaccurate things which they got from scientifically worthless sites and so people just flag and move on.

Makes sense. The challenge I have is that a lot of people on the planet think the same things. So it's more than just some person spouting weird things off a weird website. The entire output of our civilization right now is higher and higher CO2 levels. I appreciate the chance to talk it out. I supposed multiple downvotes is what leads to something being marked "dead".