Ah yeah. The Orisa change was actually mostly irrelevant to the meta at the time. The change that actually had an impact was the 2nd of 2 big Hammond nerfs.
At the time, teams were running Hammond/Sigma/Tracer/Echo mostly. Depending on the map, Rush (Rein/Dva/Mei/McCree/Lucio) was also viable. After the change in the patch you referenced, Hammond was no longer optimal so Sigma/Ball stopped being played in favor of almost fulltime Rush.
More recently Double Bubble has become popular (Zarya/Winston), but Rush is still played a ton and the dominant meta.
At the time, teams were running Hammond/Sigma/Tracer/Echo mostly. Depending on the map, Rush (Rein/Dva/Mei/McCree/Lucio) was also viable. After the change in the patch you referenced, Hammond was no longer optimal so Sigma/Ball stopped being played in favor of almost fulltime Rush.
More recently Double Bubble has become popular (Zarya/Winston), but Rush is still played a ton and the dominant meta.
The patch notes for that patch can be found here: https://us.forums.blizzard.com/en/overwatch/t/overwatch-reta...