To all the armchair lawyers in this thread, I totally promise you Spyderco is not losing any significant sales over their controversial defense of the round hole trademark. That's abundantly obvious by how fast their popular models and exclusives sell out, and how long it takes for even base, evergreen models to come back in stock. Spyderco is doing just fine, lol.
As far as aesthetics, Spyderco speaks business. Their flagship models look like tools meant to be used and have proven over decades to have earned that. I think Shirogorovs and most other over-machined, ball bearing fidget flippers look like poofy, unnecessary pocket toys compared to a Spyderco Military or Shaman. I don't want elegance in my pocket knife, I want business.