There are two pieces of steel rod and a single ball bearing between them that transmit the motion of the release mechanism through the hollow transmission shaft to the clutch pressure plate located on the opposite end of the shaft.
What I surmise has happened is this; the clutch push rod halves formerly flat ends have become concave due to wear and bedding of the ball between them and the rods have in effect become shorter over all.
When this occurs the clutch begins to drag and the cable numerous times to compensate.
Now the rotating arm travels a bit further before stopping than it formerly did.
As it travels, the roller balls move it sideways via inclined plane action provided by the three opposing indentations of the two main halves of the release mechanism. This increased travel results in the rotating arm half moving outward more than before.
With the cable housing end still being fixed there is now more side load on the end of the rotating arm.
Were it my bike I would order one of the low friction ceramic ball bearings from ACE cafe and instal it, decently greased of course, between two new rods. The sharp edges of the replacement release mechanism would be polished to a modest radius to eliminate stress risers. The mechanism would be installed and adjusted per the manual and then the cable adjusted after that. Please take note that as far as cable ends are concerned the release mechanism in the linked thread is of the pre-06 variety, otherwise the two are like.
The red lines denote one edge of of one area I would polish.