If you accept the notion that all disc galaxies are oriented on exactly the same plane (which is current scientific consensus I believe), then it doesn't seem that far-fetched to think that they all rotate the same way as well.
"Galaxies are not distributed randomly in the cosmic web but are instead arranged in filaments and sheets surrounding cosmic voids. [...snip...] We found evidence that the spin axes of bright spiral galaxies have a weak tendency to be aligned parallel to filaments. For elliptical/S0 galaxies, we have a statistically significant result that their spin axes are aligned preferentially perpendicular to the host filaments;..."
https://arxiv.org/pdf/1207.0068.pdf
"Galaxy shapes are not randomly oriented, rather they are statistically aligned in a way that can depend on formation environment, history and galaxy type."
https://arxiv.org/pdf/1504.05465.pdf
https://ned.ipac.caltech.edu/level5/March15/Joachimi/Joachim...
That is easily disprovable, no? We can see many many different angles of disc galaxies. A simple google search will show tons and tons.
(Imagine standing in a room with a bunch of CDs suspended horizontally from the ceiling. From any vantage point you can see some CDs edge-on, some from the top, some from the bottom, etc. But they're all oriented in the same direction.)
Not sure why a question like this would be voted down but my own searches have only turned up articles about galaxies spinning in the same direction.
Someone else commented with some clarification. https://news.ycombinator.com/item?id=16586901
Edit: here is a video which clearly shows the orientations of rotation are not aligned.