"Griefing" is a very familiar problem in online multi-player gaming, heck likely even in tabletop multiplayer gaming "griefers" can be encountered from time to time but due to the small numbers of players at such tables it can often be dealt with simply by never again inviting them to a "game night".
In GameFi gaming, there is a species of griefer known as a "dumper", and those "dumpers" are pretty much exactly the same "dumpers" seen throughout crypto:
quintessential "takers, not makers" of spot markets.
They can make entire platforms of spot markets un-useable, especially in the case of platforms in which all the "spot markets" use the platform's native asset as one side of each trading-pair, if they get themselves into a position of being able to "dump" that asset.
It can become totally impractical to build good strong buy-sides for other assets on the platform by making the native asset so worthless that there simply are not enough of them in existence, or not enough of them in the game, to build everything else's buy-side with.
This problem makes it very clear that it is very useful for a game to have many currencies, because a simple way to deal with the problem is to basically strike off of your list of currencies you are willing to sell stuff for any currency that has become infested with such "griefers".
We have not been running the
Galactic Milieu long enough yet to have much or any idea of how many decades such "griefers" tend to stick around "griefing" any particular game or currency, so it is not yet clear for how many years or decades one needs typically to avoid selling anything for that currency, but as long as you have plenty of currencies to choose from and avoid selling any of them for any that are already infected with such "griefers", in the long term hopefully some year or decade down the line they will exhaust their stockpiles and it will become feasible to return to building up the value of the offending currency so that some year or some decade or whatever after the "griefers" have run out of it it will again attain a value sufficient to let it start to gain at least a minor usefulness, at least in building buy-side for extremely cheap things...
The big reason to avoid selling anything for an "infected" currency is that the griefers' most likely reason for even buying any of what you are offering to sell is to trash that thing's value too by also "dumping" that; in other words, anything you sell to them is likely to itself become yet another "infected" currency or commodity (asset).
-MarkM-