We don’t really have strict rules for what is “short enough” for a disambiguation. Listing all the members of a group like that falls on the extreme side, but if the names are sufficiently well known in their respective communities, it probably helps the recognition quite a bit.
I would recommend you avoid that, it will just end in pointless arguing.
For better or worse, a lot of disambiguation comments end up copying information that is already stored in the database in a machine-readable form elsewhere. For the example you gave, the database already knows that the artist is from the Netherlands, is tagged with electronic music genres, and which members it has.
Hypothetically, the UI could display this data when it shows artists in e.g. search result lists, which would obviate the need for many disambiguation comments, but we don’t have that yet.