The Noctua don't need be drilling to get the fan blades off but by Arctic F8/F9 we have another "story".
Having a good experience in disassembling fans, out of 20 Arctic fans I killed 4. The problem is not to remove the propeller itself (you have to drill it by Arctic]), the problem is that the plastic axle on which the stator stands is fused with the stator into one piece. And in order to separate them, you have to completely destroy the plastic in the middle of the stator, during which not only the contacts are soldered off, but also the electrical board, which is made in a very cheap way, breaks easily.
So I don't recommend to buy Arctic fans for G5 Modding.