If the timestamp doesn't work at 13:25 Akiva talks a bit about how the greenlight for Season 5 came about; and reading between the lines, you can figure out why it's 6 episodes and not 10.
I think many in the cast and crew agreed to take less in compensation on some level and worked with the accounts to see what they could do with the ultimate season budget they were given <-- But that's just supposition on my part...only those involved in whatever negotiations took place know the particulars.
Yeah, I think it’s a good guess, for sure.