Raid 0+1 Failure Cases VS. Raid 1+0

I have heard that RAID 1+0 is more fault-reliant than RAID 0+1, because a secondary drive failure is more likely to cause data loss in RAID 0+1 than RAID 1+0.  In the above image, if "Disk 1" fails, which other disk failures will cause data loss? What I have read seems to indicate that the loss of _any_ drive in "Group 2" will cause data loss, but the reasoning behind this is unclear to me. If we lose "Disk 5", why would this cause data loss? It seems to me that there is sufficient information to recover the full state of data -- combining "Disk 4" + "Disk 2" + "Disk 3", for instance, should have all of the necessary information to continue functioning properly without data loss. In this case, why would the loss of "Disk 1" and "Disk 5" cause data loss? Thanks in advance!