Just like many other "indicators of potential future injury" type factors - it depends.
A lot of guys who have TJ issues do it. A lot of guys who have TJ issues don't. Some guys who do it, do it at a different timing than other guys.
It's very difficult to look at a single factor in the pitching motion as being the smoking gun in arm injuries.
It's better to focus on things you know matter - conditioning, and fatigue vs. trying to eliminate every possible injury factor that has been speculated on.