See the title. Do you care wether a handle on a brush is turned or comes out of a mold? Obviously the latter will show lines where the molded parts 'meet'.
If the brush costs £10 then I do not care. If the brush costs £300, or if the maker claims it is hand turned, then I certainly do care. Likewise, if a maker claims that a knot is hand tied 'in house', then I expect that house to be the registered address of the maker, not a location on the other side of the planet
If it looks good, it looks good. I appreciate the extra skill, in my opinion, that goes into turning a handle, but if both look great and fit the hand, I don’t believe it matters.