Dan Ben Noah quoted Rabbi Moshe Ben Chaim:
These notions contain two grave errors: 1) equating G-d with creation; 2) assuming knowledge about G-d. Two Torah verses teach otherwise: “Man cannot know Me while alive (Exod. 33:20)” told to Moses. G-d also told Isaiah, “To what can you equate Me, and I will be similar? (Isaiah 40:25).”
I agree with point 1. Some high profile interpretations of the Kabbala (but not all) incorrectly go against classic Jewisht thought and equate G-d with creation.
Point #2 that you raised needs some further refining.
The literal translation of Exodus 33:20 is: And he said you will not be able to see my face for a man shall not see me and live. Your understanding of the verse is certainly a reasonable one, but I am not sure it is the only one.
Perhaps an alternate source that there is a limitation of how much we can fully understand G-d is in Yishayahu/Isaiah 55 verses 8 and 9. And also the last few chapters of the book of Iyov/Job seem to echo this theme.
But at the same time in Yirmiyahu/Jeremiah 9:23 the verse indicates there is a certain level of Knowledge about G-d that a person can indeed obtain.
As far as certain Kabbalistic ideas that you quoted Dan, although they definitely can be abused and interpeted in a way that is contrary to Judaism, however, there is a Torah mitzva to judge, the righteous for the benefit of the doubt and the ideas you quoted are interpreted by some followers of Kabbala as symbols for vaious Jewish ideals and not in a literal sense.
And there is a precedent for this in the Tanach itself, where the Tanach for example, talks about
the "eyes of G-d" to portray a symbolic idea, even though in truth G-d does not have a body.