Paper straws are scientifically terrible for carbonated drinks. All of those fibers make a ton of nucleation sites for the CO2 and just make darn sure that your carbonated drink isn't carbonated by the time it gets to your mouth. Seriously, if you wanted to design something to intentionally make a carbonated soda flat by the time it gets to your lips, I don't know how you'd do it better than with a paper straw. Maybe a long hose that shakes the liquid as it goes through?
And sure, ok, plastic straws aren't great environmentally. But surely there was a third option before we went back to literally the worst choice? Something decently cheap, biodegradable, and non-porous? Can we not invent something like that? There's tons of industrially-compostable polymers, right? Wouldn't those break down in the ocean over time?