People have a limited amount of time to spend on different aspects of their lives. If you dedicate all of your "saving the planet" time to minor personal changes, you won't have the time to do what is actually necessary -- push for political change which will actually address the problem. Yes, you aren't saying "don't try to solve the bigger problem (lack of action by governments)" but you are saying "focus on the smaller problems (what type of laundry liquid you use)" -- which would inevitably result in the bigger problems being neglected by most people.
[1]: https://www.theguardian.com/sustainable-business/2017/jul/10...
They are only producing the means for abusing the environment-- it's the end users that are doing the damage.
I suppose you could argue that if we outlawed petroleum production that it wouldn't allow the abusers anything to work with, but it would also deny the world of most of the progress made in the last 150 years.
I am a pick-up-the-litter kind of guy, but I am not going to do without air conditioning.
Leanardo DiCaprio feels passionately about climate change, but he's not giving up his private jet flights.
Barack Obama feels strongly too, but he's not going to give up yacht vacations.
Human nature dictates the final result. Perhaps we'd better devote our energies towards ways to deal with the inevitable. Because nobody's going to voluntarily live 100 years in the past for the benefit of those 100 years in the future.