I believe it's a combination of the fact that most of these models are basically 'research dumps' primarily targeting other researchers and given this they are

I believe it's a combination of the fact that most of these models are basically 'research dumps' primarily targeting other researchers and given this they are assuming a level of familiarity with related tools/libraries. So it's up to interested people in the community to take it the last mile/block/whatever to make it easy to use, address specific use cases etc. for use by a less academic/technical audience.