This smells kind of fake, or blown out of proportion like intel and AMD both had fake vulnerabities spun up after spectre and meltdown to affect share price and manipulate the stock market.
This is even more suspect when people urge you to update, even if you are not affected.
This updating for the sake of updating, not reading release notes and just accepting things blindly has to stop, it's paving the way for some very cheap planned software obsolescence through performance reductions and functionality removals.
Curious to see the answers to others' questions about where to find info in a table for all vulnerabilities that are being patches through microcode and their impact, as well as how to tell the OS is going to push for a microcode update or not.