There's no problem - the word farm is being used differently in different contexts. In the quote you posted, farm is in reference to hashpower. You can have man

There's no problem - the word farm is being used differently in different contexts. In the quote you posted, farm is in reference to hashpower. You can have many smaller miners (zombie farms, in your quote) that know nothing about the transactions they are mining. That is how mining pools work today. All that is required is one big central node that can validate the transactions and build the block, which is what my quote was referencing with farm.