Hi StoneCut
Its one of those questions that had me stumped for quite a while. I refused to believe that grinding Anise was a suitable option and opted to removing the seeds to crush them. But that's a really tedious task as you know. I didn't think to research up on Star Anise or anything to do with Aniseed and remained dumb in my belief that Aniseed came from Star Anise.
That all changed when I did the IG Onion Bhaji kitchen demo and found that they used a spice that added that aniseed flavour and looked like fennel albeit smaller in size. I later found that this was, actually, Aniseed which is a completely different spice to Star Anise.
Aniseed has a cleaner flavour compared to star anise and being in the same family as fennel, cumin, etc., is also very easy to grind into a powder. If you haven't tried some, I highly recommend that you do.
Hope this helps.