Posting something showing a trend or what not is not a forecast. You have no idea what he forecastsor what his record is. So it’s kind of shitty for you to attack his expertise. It’s a Weather forum. This forum really shouldn’t be used as a grade of people’s forecasting skills, unless they put their balls out there.
If you want to grade people on how they talk about the pattern, feel free to go ahead and personally I think he knows his stuff because when I see his posts describing the pattern, I don’t necessarily disagree with his reasoning. So don’t be a dick and attack someone who is a degreed met. This field already has enough dicks in it.