I distinguish between federated things and decentralized things. Fedi-mint for example has always claimed to be federated, not decentralized. In the US there is a federated government (federal government).
I make the distinction because in the general understanding of the word decentralized, people believe decentralized things mean that they are self sovereign and unruggable. Any mastadon (or other fediverse) user can tell you that they aren't unruggable.
Bisq does unfortunately clearly outline that they are federated (without using the correct word) and incorrectly call that decentralized, so in that sense maybe I shouldn't have used Bisq as the example. Their documentation on dispute resolution is pretty good, but they just use the wrong word to describe a few things.