At the very least it is an example of how not to do it, and we would hope that something has been learnt from this, but I doubt it will be. From what I understand, the Swiss are happy enough with their plebiscite democracy.
The Swiss have had plenty of practice, and have probably encountered enough of the pitfalls to know that using a referendum on topic X to protest something else entirely is probably not the best idea.
The people framing the plebiscites there probably also have a better grasp of how to structure these things, such they they don't have quite so vague an outcome as Brexit.
I expect they still have the occasional issue, after all it's still people, but I doubt they've done anything quite as spectactularly daft as this in a while.