Pledgorama?

Some people are treating the first 'in depth analysis' of the net zero pledges, made by nations, at Cop26 (December 2021) as 'progress'. That analysis suggests global heating may now be just under 2 degrees Centigrade above pre-Industrial levels (https://www.theguardian.com/environment/2022/apr/13/historic-global-climate-plans-can-now-keep-heating-below-2c-study-shows). The analysis of the 'historic global climate plans', by the International Energy Agency shows apparent 'progress'. Prior to Cop26, existing pledges would have produced an increase of around 2.4 degrees. Post Cop26, the new pledges generate a figure that is 'more likely' to be 1.9 degrees above pre-Industrial levels. Are there reasons not to celebrate yet? Firstly, the analysis is entirely based on pledges. Pledges are tricky creatures. The analysis assumes that all pledges will be upheld on time and in full. There is already ample evidence of Cop26 signatories 'rowing back' on their 'commitments'. Wars and economic problems provide ample cover for their doing so. Secondly, the analysis cannot factor in the actions of fossil fuel industries and their supporters, finding ways of circumventing net zero pledges. Thirdly, the analysis does not even consider the probability the planet has tipping points. It may become impossible to reverse things, when climatic changes reach certain levels. There is absolutely no guarantee, 1.9 degrees Centigrade above pre-Industrial levels will be 'safe', even for a majority of people. The precautionary principle suggests that we need to be much more ambitious!