Since here is the better place to answer your questions from the meme post
Pool geometry can be a huge factor for RAIDZ. The smaller the files (VMs with 16k volblockstorage) the worse the problem is.
So the question would be, what are you planning on storing in that?
For PBS I did not look at small files, only what most files sizes are. They are mostly 4mb. So I guess RAIDZ is probably fine for that?
If you don’t care about why and only want to see numbers, take a look a this efficiency table:
table
Modern IT is complex enough IMHO. I like the KISS approach. At least for stuff that is important and not a homelab.