"must" vs "can" 

The article states: "..we have become contaminated or debased by the influences of MEST, which must be transcended, if we want to save the planet."
What drivel!  It is uncited.  What drivel!  Yet when I make a statement that is at least reasonable: "we have become contaminated or debased by the influences of MEST, which can be transcended" it is reverted by at least 2 editors.  The first sentence is uncited and silly.