While it is wonderful to see logical thought instead of fearmongering applied to climate change arguments, the chart in your first video is too simplistic.
For example, the Action-Yes boxes don't specify what kind of action (or address the possibility of geoengineering instead of creating regulations). Note that the "default" do-nothing system would include some forms of geoengineering, such as building sea walls and hurricane preparations, especially once the variability of the climate is established.
Another possibility is that (whether GCC=yes or GCC=no), the economic harm caused by enacting regulations may prevent society's progress sufficiently such that solutions to climate change are slower.
I'm imagining a future technology that could be a quick fix to climate change (eg: fusion energy combined with a device that uses the free energy to suck the CO2 out of the air). It is possible that increased regulations will delay this technology to the point that it is too late to use it, due to global instability.
There may be an argument that more money would be pumped into clean-tech using increased taxation in the "yes/action" column, but we've seen how well US politicians choose projects to invest in, at the expense of other potentially viable technology.
Having a weaker economy also weakens our nation's ability to deal with unseen catastrophies, such as meteor strikes. So, it is possible (maybe even just as likely), that action on climate change (in the form of regulation) could result in global catastrophe.