The problem with this, is.... if there is any type of ancestral lineage between the T3SS and the bacterial flagellum, it reveals a devolving of the b.f. IOW, since the b.f. is used in feeding its home prokaryotic bacteria, and the T3SS's function is to attack eukaryotes, a much-later design.....it's obvious which came first: the bacterial flagellum:You already asserted that there is evidence of design, and have repeatedly mentioned Behe as a source on the subject, yet Behe himself admits that there is no evidence whatsoever to support intelligent design.
And what do you think the significance of that is?
Then please demonstrate the truth of intelligent design.
It functions as a type-3 secretory system.
The Flagellum Unspun
The Non-Flagellar Type III Secretion System Evolved from the Bacterial Flagellum and Diversified into Host-Cell Adapted Systems
Type three secretion system - Wikipedia
"The injectisome is found in a small subset of gram-negative bacteria that have a symbiotic or parasitic association with eukaryotes. Since eukaryotes evolved over a billion years after bacteria, this suggests that the injectisome arose after eukaryotes. However, flagella are found across the range of bacteria, and the need for chemotaxis and motility (i.e., using the flagellum to find food) precede the need for parasitism. In other words, we’d expect that the flagellum long predates the injectisome. And indeed, given the narrow distribution of injectisome-bearing bacteria, and the very wide distribution of bacteria with flagella, parsimony suggests the flagellum long predates injectisome rather than the reverse. "
https://evolutionnews.org/2015/07/why_the_type_ii/
And part of the purpose of "irreducible complexity" is to negate the pov that simpler systems evolved into more complex ones. The evidence supports that b.f. started out as complex.
The concept stands.