And we will keep using it until we have a better model
Which we don’t, for that matter
You’re speaking as if scientists aren’t constantly trying to create new, better models that fit the data better.
I have no problem with the scientists searching for better models.
It’s the scientists talking about dark matter like it’s as established as an electron whereas dark matter and energy is more like aether.
The entire evidence for dark matter (and dark energy) has been generated by matching data to models we are sure are incorrect (quantum gravity).