That is a wildly complicated process - but it sounds like the advice was to incorporate somewhere else where it's easier instead? I guess that's fine with the common market? Why not just do that instead of going through all this hassle?
Biggest example is Soundcloud that started as a UK Ltd. However since Brexit, nobody does that.
We considered incorporating as a US company, but that seemed OTT. Maybe we will do a flip later. Lots of people suggest registering in Estonia as they apparently make it very easy, but I have never actually heard of a venture backed company that did that.
The Irish process ... Well, is much less streamlined.
Still a damn sight better than Germany though