There's a huge advantage to having multiple "whisks" as you call them. First, there are different kinds of whisks that are useful for different purposes, though I only see one obviously different kind in your photo.
But the biggest advantage is that you can mix a series of different substances without having to wash the whisks between substances. You can instead collect all the used whisks and wash them at the same time after the masterpiece is in the oven.
This is a fine example of multi-core processing and the disadvantages of having too small a cache, resulting in "thrashing" (pronounced "washing").
...And the word is hoarding, or do you spell it differently over there? (Hording could be taken as forming into a horde, which is I suppose not inappropriate in this case...? However I think the verb "to horde" would be intransitive, so the whisks would horde themselves, rather than you hording them... :-)
Max...you don't say if you asked G the G about this? I say this with some trepidation because you may get an answer that defies (male) logic. Something like "Well, I kept the whisks from the previous 4 defunct mixers in case the new ones broke". Which sounds good. Except that the whisks will never break. Unless, of course, you throw all but 2 away. Then one of the remaining ones will break next week, but the mixer will go on running for the next 20 years.
And before anyone accuses me of subscribing to the Mars-Venus thing, I heard a report that the Mars Rover Curiosity has shown that there is no beer or porn or ESPN on Mars. So men can't be from there......