Tenacity is a toxic stat
And frankly I'm not sure why we tolerate it
The power behind being able to sit on 51% CC reduction or better based on runes and items is hard to overstate. Tenacity on its own is massively underrated and, in an older game where CC was stronger with less uptime, very OP. Its also hard to appreciate despite its power, especially in a time where downtime on spells has never been lower.
Tenacity is almost entirely an invisible stat and CC reduction should not be like this, especially when you can get so much of it. Its also directly contributed to prevalence of displacement CC just to not be easily counter built.
When will tenacity be replaced with skillful and meaningful CC reduction and negation? We need items on par with Black King Bar that require proactive use and reflexes - appreciable skills that help a player showcase superiority.