Its not - most often "skeptical science remarks" although popular, are poorly informed and misleading.
A quick scholar search shows numerous studies broadly agreeing with the one featured here, including the seaweeds effects on sheep digestion and microbial and metabolic details:
I thought I was the only one who noticed this! Seems very popular and common in forums like HN and Reddit, but less so elsewhere.
What did you learn from this great conversation:
OP: This study has never been reproduced!!!!
Response: Uh, yes it has.
So often, it's just dismissive hot takes with a sprinkling of jargon and absolutely no substance whatsoever.
Substantive critique is fairly rare.
Yes, significance testing has some flaws, but they mostly show up at the margins, and complaining about sample sizes has nothing to do with that anyway.