Earlier quoted context omitted.
The parent has a point that if these natural cycles change even slightly, however unlikely that may be, it will swamp out any effect humanity has made up til 2023, heck maybe even 10x everything humans have done.
Yes and if the sun blinks out tomorrow that will be the biggest effect of all. Remind me again why that is worth talking about, other than to distract and detract from a discussion of climate change?
This seems like a strawman, the sun blinking out is not a slight change, obviously if only a world shattering change could produce such a effect then there would be a different calculation. In the context of the natural systems the parent's comment refers to, even a 1% deviation is enough to swamp out all human effects combined.
And that is entirely within the realm of possibility.