The limit for dynamic rules is 30K (for basic block/allow) + 5K for more complex blocking, plus a minimum of 60K more for static complex rules: https://developer.chrome.com/docs/extensions/reference/declarativeNetRequest/#property-GUARANTEED_MINIMUM_STATIC_RULES

I agree the original article/quote was probably just worded weird and not being malicious. The issue is more all of the other articles that picked up on that with the wrong interpretation, as many outlets have through the whole Manifest V3 situtation.