Thanks for the screenshot! It allowed me to search for and find the relevant post. Bam.
It doesn’t explicitly detail plans to nerf healing output, but it does provide insight nonetheless!
What’s interesting is that my search also brought me to another post of his from Sep ‘19 mentioning about how some balance changes during the goats era were in preparation for 2-2-2 and that more balance changes would come, but they would need time to gather stats and data to make informed deductions because 2-2-2 had just debuted with a new hero at that time. Seeing as it’s been nearly half a year, Blizzard may finally have enough data on the support role to execute an action plan beyond “nerf whatever is meta.”