When blocks are shattered like that I find that repairing them is not worth it. (been there done that). Having said this- sometimes a quilt will have certain fabrics that have shattered while others are strong. So if the ratio of good to bad is high I might try to fix the shattered blocks.
I don't know anything about that block but it's interesting.
I have a passion for old quilts.

The other quilts look like feedsacks to me- popular from the 30s to the 50s

Thanks for the closeups. That quilt is old. Those are not reproductions. I would not cut it up for pillows. I would probably not put the work into restoring it, as SusieQ already said. I would leave it as is, just to study the fabrics, or frame good sections of it to keep.