There is a long term correlation with solar activity(CME's,Sunspots,Solar flares) that can attest for large climatic swings of the past.
The science is not clear as day, and if you stopped searching for the truth of the matter you've stopped do science.
Based on 2020's level of solar activity, would you expect it to be hotter or colder than it actually is?
Because from what I've seen, you'd expect it to be colder.
Which means something else is causing the temperature rise.
So why bring up solar activity at all?
https://climate.nasa.gov/faq/
Climate Change: How Do We Know? https://climate.nasa.gov/evidence/
Large swings of the past aren't as quick as you think they are, or as we are experiencing today:
https://xkcd.com/1732/
There is a long term correlation with solar activity(CME's,Sunspots,Solar flares) that can attest for large climatic swings of the past.
The science is not clear as day, and if you stopped searching for the truth of the matter you've stopped do science.