If there is no explanation for what a critic is doing and they are criticizing for pleasure and it's unmistakable either ignore them or block them, problem solved. All the losers deserve each other. There's a clique of these pea-brain, mouth-breathers on every forum; they run together like a pack of hyenas laughing on cue and in chorus, making light of serious matters. Do not entertain.
PS: seedling stage is [aprox] 3 wks...