It is not official yet, but large institutions have been affirming it through the news, I think you are very eceptive and at some point the PoW protocol will be obsolete and will go against many environmental laws.
First, as
FinneysTrueVision commented, ethereum 2.0 implemetation can not even be this year as I have read on news. Precautions are being taking to make it secure and safe. It is still under testing.
Secondly, I will prefer proof of work (POW), It provides employment.
1. Many people are employed in companies that produces miners
2. Many people are also employed by mining farms for work purposes
If all cryptocurrencies start using POS, many jobs will loss.
POS is not what bitcoin needs, it only needs what can make transactions faster with lower fee, but not in the way job will loss as I explained above.
If obviously the loss of jobs are collateral damage but there are more and more energy restrictions, according to calculations bitcoin will have its last mining block in the year 2140, something late, don't you think? For now this is just speculation but I am more than sure I will not get to six years using PoW.