Both of these points are factually incorrect. The rate of CO2 increase is far less than seen in Phanerozoic era. That Era saw a truly massive and rapid increase as a result of the earth warming and foliage growth.
The Phanerozoic is the current era, running from 549 MYA up to the present. I have been told by half a dozen deniers that the chronological resolution of proxy data of just 11,700 years of the Holocene Epoch was inadequate to support the contention that the rate of current CO2 and temperature increases were unprecedented. Yet now you claim to be able to identify higher rates in events hundreds of millions of years ago. Neat trick.
Within the last 65 million years, the most dramatic CO2 event was the Azolla event. This was a rapid reduction of CO2 which is given credit for the appearance of the Earth's iced poles. The event produced an 80% reduction in CO2 (3500 to 650 ppm) over a period of 800,000 years. The current event has produced a 43% increase (280 to 400 ppm) in 150 years.
Let's do the math: 3500 - 650 = 2850 ppm
2850 ppm / 800,000 = 0.00356 ppm / year
vs
120 ppm / 150 years = 0.8 ppm / year
So the current rate of change is 224 TIMES as fast as the fastest prior event in the last 65 million years