FWIW, it's not a requirement to have 8 hours of local origination, unless of course elected on an application. But what they are doing is granting an additional preference to those stations that will meet this high standard of local origination.
(And, really, you can meet the requirement with 4 hours of local origination, repeated once.)
I do think the LPFM service is perhaps an odd place to have rules encouraging so much local origination, given its NCE status.
Perhaps, as they did with the distance rule, this rule could be relaxed for LPFM stations in rural (below top 50) markets. Allow those stations to program as little as 4 hours of local origination per day, with up to 50% (2 hours) repeated. (So, similar to the above, they would only have to produce 14 hours of programming per week, and repeat it once.)
Also, speaking to the "top 50" rule - I want to know what market list the FCC is going by for this one. Arbitron markets? Nielsen markets? ADI? DMA?
If I want to operate an LPFM in a county that is not Arbitron rated at all, then can I use this exception, and have board members / studio distance from transmitter using a 20 mile rule rather than a 10 mile rule?