JFP did that.
Riche basically let the show grind to a halt starting around 1997, and then did little to stop the Jason worship which ate the show alive starting in 1998. Many key stories which had been built up for some time, like the Stefan/Laura "romance", slowly died onscreen. Endless amounts of time were spent on zoned out Jason reading kid stories and pouting, while a dozen characters spent nearly every day raging over his honor and glory. Endless overly producer, slo-mo shootouts. Then you had some slapped together comic relief which wasted potential (like Jax/Alexis). They also did a poor job replacing Brenda, as Chloe and Hannah both failed with viewers.