The bug has existed since speculative execution was introduced, 17 years ago. A 3-year gap between world-breaking bugs isn't that exceptional (I hope!).
Just tracking bugs is a billion dollar industry (Atlassian, etc.)
Personally? Tonight my Firefox was rendering all images as black until I rebooted. When I press the 'stop' button after watching something on the HBO app, it doesn't stop.
https://www.reddit.com/r/softwaregore/
These aren't hypothetical vulnerabilities that a skilled attacker could discover after years of searching (as is the case with these CPU bugs) - they're right there on the surface.