Market manipulation is anywhere, even is stock it is manipulated by whales, I think it is just fined because it happens in every type of currency or trades. we need just to be cautious in investing, many coin which have a small volume can be manipulated, just stay out of it and you will be just fine
Technically, there are two major varieties of market manipulation
The first, which you refer to in your post, i.e. manipulation by big players and market movers ("whales" as people call them here) may not even be considered proper manipulation by some (even though such activities can be prohibited by governing bodies and agencies such as CFTC, SEC and their likes) because it is market manipulation carried out by market means via exploiting one's financial leverage
On the other hand, there is market manipulation of a more evil or even destructive type. This manipulation is done not by traders (whales or otherwise) but by entities which have a leverage other than purely financial. These are exchanges themselves first and foremost as well as all those trading commissions already mentioned (don't be surprised here). This type of manipulation is inherently evil as it destroys the market when it runs wild