The controversy is over whether we should learn more about it and take appropriate actions, or ignore it. This fundamental disagreement makes it a controversial topic.

Reminds me of the when all the catholic priests were molesting kids and being moved around instead of outed and prosecuted. This was also a controversial topic too for the same reasons. Some people wanted to take action, while other (more powerful) people wanted to ignore it.

Indeed! Not scientifically controversial at all, but politically controversial, unfortunately.

It's a propaganda talking point. "Controversy" is generally as much a manufactured product as possible, because it assists propaganda goals.

And these same people likely fund "reports" and "news" with misinformation to make it confusing for the average person.

In theory it can also be beneficial to historical cold countries like Russia and Canada.

It’s entirely possible Russia will find itself with a pacific warm water port.

Perhaps tons of tundra frost will become fertile farm land.

Of course this is at the costs of billions of climate refugees having to migrate as well as a bunch of other side effects

It is best to say that it is a religious topic. Everybody has strong opinions about it, but nobody has ever bothered to look into any details of atmosphere physics.

Everybody thinks he knows everything about the subject, but nobody ever checked anything. If people go into the details of some absorption spectrum they risk to get cancelled.

It's religion - and a strong one. With dogmas, taboos and holy authorities.