The `wpcom_vip_get_term_by()` function is [deprecated](https://github.com/Automattic/VIP-Coding-Standards/blob/72ec09bba681e2a1fe58590984123e733c702e0f/WordPressVIPMinimum/Sniffs/Functions/RestrictedFunctionsSniff.php#L276), as `get_term_by()` handles all of the caching itself (via WP_Term_Query, etc.) now. The use in the Zoninator class can be simplified.