318 poly wide block

I was watching your "clutch movement" video and something isnt right (But you know this don't you) It appears to me that something isn't moving mechanically.

Is the clutch release bearing moving on the input shaft? can you disconnect the clutch down to just the fork and see how that feels? Look up through the fork opening and see if the clutch release bearing slides on the input shaft?

Also , in your slave cylinder video, their doesn't seem to be "enough" travel IMO.
Assuming that that is the correct setup, (Slave Cylinder, the pedal goes to the floor when bled, the linkage travels properly when the slave cylinder is disconnected) Id say your clutch is done, time to take it apart. Did that thing have a slave cylinder from 1965? I would think it is a linkage setup, maybe that is a retrofit that never was working correctly.

So by saying the clutch is done do you mean I need a new clutch?
And I am unsure if the slave was original or not the one I took off looked like it had been there for quite some time but the piston I believe is what it's called was stuck in place all the way back and not moving at all.
I was thinking the linkage could be something that was rigged and never worked properly I can get back under there and take a video of what is going on, I'll just have to wait till my fiance gets off work so he can be pushing on the pedal he will be home in a couple of hours. But in the mean time I'll post a picture of the linkage.