These politicians know nothing about what they're legislating.
Unfortunately, they don't need to know anything about the subject of their legislation. All that's necessary is that they push bills that they can subsequently point to as proof that they're "doing something about the [insert subject here] crisis". And in some ways, it's even better for them if their bills get defeated; that way they can point to the group that was most responsible for their loss and demonize them as being against [insert justification for the bills] -- that way, they get to puff themselves as being behind making it safer for the public and slap down their opponents for failing to recognize the seriousness of the crisis.
The whole and only point of not hitting +2 degrees was to avoid the runaway processes beyond which we could not predict what would happen from our position of ignorance.
Despite the 2C number having been nothing more than wild-ass guesses in scientific papers before being seized on by politicians eager to be seen as doing something -- anything -- to address the existential crisis of "global warming". At least, until "global warming" began to produce colder weather, warmer weather, dryer weather, wetter weather, more storms, fewer storms... and "global warming" was rebranded as "climate change" and hooked into attribution studies so that any weather that deviated from a continual mild, calm climate could be pointed to as evidence of "climate change".
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