There’s really not much to debate, is there. Mini clearly refers to size. That’s it. Whatever other features it may or may not have, it means the smallest. Just as Pro refers to the high end of the line.I guess that is what Veinticino means. Form factor is mini in ipad but the rest is full fledged. But with mac it is form factor AND lower specs. And since you have SE in iPhone, the MINI here could be form factor with SE for lower specs.
the fact that we're debating this is proof that the clarity of the line up is long gone.