Clutch Master Cylinder or Clutch Pedal Safety Switch?

Yesterday the clutch pedal stuck to the floorboard/firewall, and looked over the master cylinder to check for fluid loss, none, and no lines leaking heading toward the slave cylinder. I started to inspect the clutch pedal being that the truck was not starting when the clutch pedal was fully depressed, though the clutch pedal could be re-positioned (returned)to its normal position before depressed. I found the clutch pedal ignition switch finally (not like the older vehicles) and saw that the end of the plunger rod coming out of the clutch master cylinder broke off of the clutch pedal assembly. The eye ring at the end of the this plunger rod that attaches to the grommet at the end of the assembly bar (please excuse my ignorance as per names of this assembly bar where the clutch pedal & brake pedal work off of).

I am still a bit flabbergasted as to why Ford would be using plastic instead of metal on such a used and crucial part?

What too replace? The clutch switch or the clutch master cylinder? Is there a way to just replace this plunger rod so as not to replace the clutch master cylinder? I have heard it is really a pain & can be difficult to bleed this clutch master cylinder.

Any HELP would be super great! Many thanks in advance!