Yep. My reading is that everyone needs to use an appropriatly sized reach weapon to get reach. The rest is an example of how a large creature gets its reach increased.
Strictly speaking I am not aware of the appropriate part being anywhere else, so its a judgement call on whether you think an example which has no backing is a rule or not.
Strictly speaking I am not aware of the appropriate part being anywhere else, so its a judgement call on whether you think an example which has no backing is a rule or not.