How can so-called Cretan hieroglyphs be hieroglyphs when there are only 45 of them?

Until now most researchers have simply assumed that the 45 Cretan symbols (by my count), exclusive of numerics, must be hieroglyphs. But the evidence appears to gainsay this hypothesis. As the table below makes quite clear, there are only 45 Cretan symbols, to which

only 27 may possibly/probably/definitely be assigned meanings.

The significance of the remaining 18 are currently beyond the bounds of decipherment:

So this lands us with a total of only 45 Cretan symbols. If and when we compare this number with the approximately 1,000 Egyptian hieroglyphs, the whole notion that the Cretan symbols are hieroglyphs comes apart at the seams and is shattered.

And that is not the end of it. There are anywhere between 600 and 1,000 symbols in Cuneiform.

So once again, the massive proliferation of symbols, i.e. hieroglyphs, in Egyptian, and of symbols in Cuneiform make a mockery of the notion that the Cretan symbols are hieroglyphs. But if they are not hieroglyphs, what are they? It would appear that they are ideograms or logograms on seals and nodules which serve to tag the contents of the (papyrus) documents they seal. This hypothesis makes a lot of sense, since almost all Cretans and Minoans, administrators, merchants and consumer, were illiterate. These people were probably able to master the minimal number of 45 ideograms and logograms which we find on 100s of surviving seals. But while the illiterate hoy polloi could not read the script on the sealed papyrus (or leaf tablets sometimes), the scribes most definitely could. This leaves us open to yet another hypothetical question? What is the script of the texts? How many symbols or syllabograms (if the latter yet existed) would have been required to write the papyrus or inscribe the leaf tablets? Was this script, if script it was, an early form of Linear A, such as Festive Linear A? Or was it actually Linear A? This question or hypothesis demands further investigation.