FDA approves Sareptas Srp901 for the whole population, page-30

Let me explain it - “simples”.
Over the passage of time the rumpy pumpy positive posts have gone from getting thumbs up & likes in abundance to next to nothing as the SP reality has borne no relationship to said posts. Everyone loved confirmation bias. Certain soundly based positive posts by some still attract positive reactions.

The posts that you call negative, initially attracted condemnation & retort as they didn’t fit the confirmation bias. Likewise over the passage of time as the SP has been more in line with negative / critical posts such posts have garnered more favourable reactions.

There you go - no posters named but human nature explained. Simples.