“…ignored by 99% of players”?
We could look at kills - though I can think of biases in kills (the specialist haulers do rather advertise what they may be carrying)
Or we could look at what people actually buy:
On Tuesday, the last day available on https://evemarketer.com/ there were more Badgers, the Caldari hauler, bought on the market than Miasmoses (ore hauler)… Even the Sigil sells in similar volumes.
Without going into a lot of effort it appears that each hauler is generally equally used - and because there are more types of Gallente haulers you see more Gallente hulls.
Subjectively - and as an industrialist - of three characters that I operate independently, only one trained Gallente industrials. I’ve a Miasmos and Kryos and haven’t used them for over a year - My Impels get a lot of use in place of them.
The current setup appears to be sound.
I suspect the reason many train the Gallente line if they do us for the Interon mkV which has the largest capacity of any T1 general hauler., And of course the Gallente Industrial skill is a pre-requisite for the Obelisk - the tankiest freighter with a good hold and agility which makes it popular.