As for plants starving, save us the drama Mr Yohe.
Ever hear of self skepticism? Do a little self checking Mike.
Ever hear of Quora.com. It makes for some interesting reading.
QUORA
Is 150ppm level of CO2 in the atmosphere really the level that plants start to die?
Short answer: it depends.
During the glacial periods in the past three million years, CO2 concentration got down to 180 ppm (once; usually it was around 200). In the inter-glacial periods, it rose to around 300 (again, once, mostly it rose to around 280).
Of course, scientists are curious: if plants don’t thrive in low CO2, how did plant life survive the glacial periods?
It turns out that different plants have different responses to extremely low CO2 (tested at levels as low as 50–70), that the two types of photosynthesis (C3 and C4—the numbers are subscripts in proper notation) respond differently, that adaptation to low CO2 (180–200 ppm) can be seen within five generations, that plants show shifts in growth between root, stem, and leaf, and more.
I found this overview of the varying scientific papers very interesting, and it cites lots of other papers to investigate, too: https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.2010.03441.x