Yes it is still revertable easily.
I did that, but then 'Mięguszowiecki Szczyt Pośredni / Prostredný Mengusovský štít' was restored in 2 places (another one was added recently in https://www.openstreetmap.org/changeset/131187293, which the changeset here tried to fix).

I removed the recently added one and moved the old one to around the position https://www.openstreetmap.org/changeset/131187293 wanted to do. The messed up arete seems much better now (no parallel ridges).