So you just go ahead and continue to do nothing while armchair quarterbacking whatever it is you think you're controlling (it's nothing in case you haven't yet realized it). You showing up to a protest also does nothing more than using your stainless straw. It is the people in power that are actively denying climate change exists, striking from the official record any mention of it from any official forms of government communication, and there is nothing Joey Sixpack can do about it. Making fun of or belittling in any way other people for doing whatever they can is just beyond unhelpful.
Also, do you not think that those that are using stainless straws and eliminated use of single use plastics in their personal lives are also not doing other things to encourage their leaders to enact big changes? Signing petitions, writing/calling representatives, attending protests, participating in community events are all things that individuals can do that all add up to nothing in today's government leadership. It would be much better use of energy complaining about the havoc the current administration is doing to undo legislation that did enable large scale changes than admonishing the little guy for something totally out of their control