1- Any link that sends qualified traffic is a good link
2- It can’t cause any Google “harm” in the form of penalties
3- Google might still use them anyways at least for indexing and possibly for ranking
So, if Google will still “index” the unindexable when they see fit, e.g. someone has linked to it or Google thinks it’s “good for users” then I find the whole noindex / nofollow thing to be a bit of a farce.