This is a bit of a stretch. Postures of priests and deacons are covered by the rubrics. Postures of the congregation simply ARE NOT. The fact that the rubrics say what a priest or deacon are suppose to do or not do has absolutely nothing whatsoever to say about what the congregation can or cannot do. It would be wrong for the priest (or deacon) to tell the congregation to use the orans (or hold hands or hug or anything else). It would probably be equally wrong for the priest (or deacon) to tell the congregation to NOT use any of these postures.
Voris is a poor source IMHO.
The most that can probably be said is that the congregation should not be encouraged to use such postures but there is NOTHING prohibiting them.
Here are some more reliable sources on the subject:
I might also point out that the orans posture by the congregation is specifically used with Vatican approval in Italy and used pretty much all over Europe as common practice.
Not surprisingly to me at least, Voris is again, as usual, simply overstating his case. (in other words, he’s wrong)