Crypto one way or another is the future, no matter if people like it or not. There are always people who try to fight technology, nothing new here.

• Fighting technology is stupid, you should embrace it and then find ways to make it reliable, economical and find ways to not waste much energy, new algorithm can do that.
• The latest study is from 2020 which analyzed CO2 and came to such a conclusion, since then lots of things have changed. That Bitcoin was never be designed to be climate neutral is clear and there exist already better solutions. I think Tesla, Mozilla etc think that this reflects - forever - the state of blockchain or crypto, which is entirely not the case. It will evolve and we learned already from the mistakes.
• You can do with one transaction thousands of business transactions in one go with newer algorithm, no bank is that efficient.

Essential problems are

• Mining. The govt should declare this world wide as illegal. It looks like this might be happen, there are some countries already banning it which is a good thing.
• Mozilla and other things that the payment system might never evolve, this is entirely not the case. So Mozilla wrongly assumes that banking is the better solution, this is not the case in terms of efficiency and privacy.
• Scammers, but they also exist with traditional banking systems. I speculate that the govt and or Mozilla fear loss of control, which might be one key factor why they dislike it.