So, -and correct me if my understanding is wrong-, the {Dochmey
HochHom} is grammaticaly identical to the {Dochmey mI'}. But we tend
to accept the {Dochmey HochHom} as being correct -in order to convey
our intented meaning-, because the {HochHom} is acting like an
adjectival verb (although it is not).

No. Dochmey HochHom and Dochmey mI' are indeed grammatically identical (except you've been using mI' as a plural, so it's an implicit Dochmey mI'mey). We are not making exceptions to accommodate the meaning we want.

Dochmey HochHom luyajHa' nuvpu'
people misunderstand the things' majority

People misunderstand the majority. The majority of what? Things. There are things, and people misunderstand the majority.

Dochmey mI' yajHa' nuvpu'
people misunderstand the things' numbers

People misunderstand the numbers, the quantity. The numbers of what? Things. There are things, and people misunderstand how many of them there are.

This was Ed's original, correct objection. Dochmey mI' doesn't mean "a lot of things" or "several things." It means "the number of things," "the count of things," "how many things there are."

-- 
SuStel
http://trimboli.name