In general these people claim humans are harmful to the environment.
As they write that on electronic devices which uses resources that were mined from the environment which is destroying ecosystems.
Such hypocrites.
pretty much everybody who fights against people who are being harmful to the environment are hypocrites as they have to behave in the way humans harm the earth to get by in modern life. this isn't much a bad thing that they're hypocrites though as they need to get by in modern life if they ever want their voice to be heard and not passed off as an unemployed hippie or something. they (hopefully) didn't exclude themselves from the humans who hurt the earth. they may not like that people are doing it, might be vegetarian and protesting sure, but there isn't much to stop them completely from polluting the earth unless they minimized the ability to by of course do what the person said in the facebook post, dropped everything in modern life, and went to live in the wild.
a lot of things that humans do provide to the destruction and hurting of the earth. pretty much everything we need to live in a modern lifestyle hurts the earth. the slaughterhouses using water and their methane production, the power plants that pollute the earth, the cars that shoot up carbon monoxide. of course, businesses wouldn't want to switch to the more bio-friendly way of going along with their business because it would reduce how much money they take in.
