Difficult to understand...hard to say?!*To be honest, I don't really understand what this guy means, so I created this vote for everyone to speculate...*
This is probably someone who's jealous of your capabilities and is trying to get you off the platform so he can get a better chance at gaining what he wants and making you seem weak by saying "touch grass", with this he is trying to point out a fake fact which obviously is not true, tying to say " get off the platform loser, you are just trying to make us feel left-out/incapable of doing such things. This is a form of jealousy which you shouldn't care about.
Hope this explains!!