https://codesearch.wmflabs.org/search/?q=ParsoidLogLinterData&i=nope&files=&repos= shows that the only reference to the ParsoidLogLinterData hook is in the Parsoid codebase. We had all along assumed that this was actually implemented somewhere.
So, for now, perhaps, we should simply do a UDP post of lints to the Linter API just like Parsoid/JS does.
We should concurrently explore the implement of this hook in the Linter extension to support direct writes to the production db.