Satan always opposes God. We read
Moses 2:28 And I, God, blessed them, and said unto them: Be fruitful, and multiply, and replenish the earth, and subdue it, and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth.
God commands man to be fruitful and multiply. Wicked men teach that we should limit our children, and even otherwise good men second his counsel and tell us to finish school or to get to know each other before having children, and that there is no sin in limiting the number of them.
God commands man to subdue the earth. Wicked men have made a great noise and tumult about how horrible it is that men are increasing and subduing the earth that they may have a place to live.
God commands man to have dominion over the fish, the fowl, and every living thing. Wicked men teach that man is the cancer and nature is the body infected with it.
Indeed, we would be wise to hearken to the scripture:
Mosiah 23:14 And also trust no one to be your teacher nor your minister, except he be a man of God, walking in his ways and keeping his commandments.
For wicked men stand in opposition to God, as they give ear to him whom they list to obey and Satan always opposes everything that comes from God.