Further thoughts: Considering it’s extremely low price, the Hudson Arm/Brush is certainly worth a try. As I thought about it more, a couple of things occurred to me.
1- If the Hudson Arm/Brush is used alone (with no other anti-static device), playing a disc with a static charge would mean as the LP is playing, the area not yet having come into contact with the Arm’s bristles will still have a charge, and therefore be attracting dust. That is especially true if records are played with no dust cover in place.
2- I never play an LP until I have deep cleaned it, whether new or used. And I don’t necessarily immediately listen to every LP I have just cleaned If only the Hudson arm is used to address static, and deep cleaning has created a static charge on the disc (or it already had one, which the cleaning did not remove), that would mean the disc would be put into an inner sleeve clean but with a static charge. Not a good idea.
But there is no reason the Hudson arm cannot be used in conjunction with any other anti-static device. So treat the disc with a, say, Destat III, then play it with the Hudson arm in place. In the late-60’s/early-70’s I used the Cecil E. Watts Dust Bug, which differed from the Hudson Arm in that it had a round barrel of bristles in place of the goat’s hair/carbon fiber bristles, and had no grounding wire. I was amazed by how the Dust Bug tracked the LP at the same speed as did the cartridge. I assume the same is true of the Hudson arm.