No. You are incorrectly chaining statements.

* Many criticise the docs; * There _are_ docs, and a lot of them.

This is not an "A therefore B" proposition.

It is offering 2 points, not positing a connection:

"The docs are not very good." AND "Docs do exist, lots of them."

In other words: there are docs, lots and lots of docs, but they are not very good.

For instance, specifically, the indexing and cross-referencing is, I am told, poor.

Too much documentation, if badly organised, can be as bad as too little.