My take on the politics is that this issue is something that could get nationalized, like congestion pricing in NYC. [1] It's rumored that Newsom wants to run for president in 2028 so he's avoiding any policy which might be broadly unpopular nationwide [2] [3]
[1] People in NYC are seeing less congestion plus more cops in the subway, so they see some benefit from the policy, not just a cost.
[2] https://www.msnbc.com/top-stories/latest/gavin-newsom-trans-...
[3] Only about 20% of the public agrees with "Transgender girls should be allowed to participate in women's sports" https://www.ipsos.com/sites/default/files/ct/news/documents/...
Yeah this was not a good trade off. Though most cups (eg polarcup) were already pfas-coated paper so it's not a new problem.
And yes straws aren't really necessary but as someone with sensitive teeth they avoid pain in cold drinks. That's why I use them. McDonald's tried to simply stop serving them here (EU) but the backlash was too great.