That is correct, "clockwise" only makes sense relative to a single observer: on Earth we set up out coordinate system so that the Milky Way's directed axis of rotation points one way, and most galaxies have it pointing the other way. "Clockwise / counterclockwise" makes sense for images coming from telescopes but it's not cosmologically meaningful.

Note that this is not that easy to determine:

  When done manually, the determination of the direction of rotation of a galaxy can be a subjective task, as different annotators might have different opinions regarding the direction towards a galaxy rotates. A simple example is the crowdsourcing annotation through Galaxy Zoo 1 (Land et al. 2008), where in the vast majority of the galaxies different annotators provided conflicting annotations. Therefore, the annotations shown in Fig. 1 were made by a computer analysis that followed a defined symmetric model (Shamir 2024e).

The point is that we would typically assume a 50-50 ratio regardless of where you are in the universe.