I suspect this thread (apart from a title edit which removed date of event, weird but ok) was flagged in some way: early on it started ranking very low given points and time of submission, currently it shows at the end of Nim searches in algolia (by default ranked by points).
I submitted being careful not to advertise the submission on Nim channel to limit artificial growth by fans and possibly avoid the flagging mechanisms (unsuccessfully). If it were to die off without interest, fine, somebody else would submit again or maybe people are just not interested. Instead it got points but went very early on away from top page. This means people were interested but the post had artificially limited visibility. It also means a repost is not encouraged.
I believe this is a legitimate submission advertising and stimulating discussion from larger HN community on a Nim (a language on which HN crowd has expressed interest) event that happens once a year (and there has been very limited submissions on Nim subjects in the last months).
Is there something else a normal user should know to avoid stuff being flagged while trying to genuinely share something without trying to trick HN in any way? Or is there something specific in this post that warranted flagging?
I am personally very fond on Nim on HN since this is how I discovered about Nim, but this stuff happening makes me less eager to submit stuff (Nim related or otherwise on this site).