Nothing to do with appeals to ignorance.
I will show you that it is.
Some things are inherently beyond the scope of certain discipline.
Neither you nor I know what you mean by "a certain discipline", Nevertheless, you claim that we are ignorant of "Some things"?
So you ask us to accept ignorance and say it is not an appeal to ignorance?
You are in fact saying, "We are ignorant of it, therefore it must be a god."
I.e. not everything can be measured and quantified; that doesn't mean that which cannot does not exist....
Not everything has a mass, length, width, temperature, etc.
The things that lack all these substantive attributes are often called , "abstract nouns" They have no existence as such but are recognised as attributes, just as "green" "hot" "long" "old" are attributes (or as we say, "adjectives")
You cannot have a bucket, pound, five foot, of hate or thought. These are abstracts. They have no existence of their own. A cloud of hate does not exist. Such nouns have to be attributed to someone or something.
You complain about not being able to measure them, yet we know when there is little love or much difficulty or deep thought - we quantify them. We can quantify them quite accurately using language.
However, one difficulty with abstract nouns and abstracts in general is "If nobody is sure what it is or if nobody can agree what it is, then the chances are that it really does not have an actual physical existence."