Net Zero, if or if it is not achieved will do very little to solve the existential threat that humanity faces.
The clue is in the term "net" - it is just a mechanism by which the big users of fossil fuels can offset their emissions elsewhere.
You will be well aware that the IPCC still uses GWP100 which leads to frankly ridiculous suggestions like removing ruminants because of enteric methane. GWP* is not, nor has it ever been a conspiracy theory.
The only way to mitigate man made climate change is to stop extracting carbon sequestered millions of years ago and setting fire to it, adding to the carbon already in the atmosphere.
Look at the explosion in fossil fuel usage - my dad is only 76, yet he can remember the first personal motor car on his street, now most people have one. Air travel used to be the preserve of the (wealthy) minority, and now thousands of planes criss-cross the planet every day, all powered by fossil fuels.
Basically, unless we are reducing/stopping using fossil fuels (and sadly, fossil fuel based fertilisers), it means diddly squat
Absolutely. I have done a significant amount of research on forecast methodologies, especially regarding methane.
I am also aware that fossil fuels are THE major determinant.