Archiving does not change number ranges.
If you change number ranges, then you have to do this as always and usual with special care, this has nothing really to do with archiving.
The recommendation from OSS note 781802 has its reasons, based on experience that the support desk made with customer incidents.
I certainly try to get this message over to all who are allowed to maintain number ranges in our company (not really many people)
Even the archiving programs get better, but on the number of OSS notes you can already imagine that not everything was in a good shape from the very beginning. And still archiving has not become a regular process in many companies. The more it is used the more people are checking the correctness and may find the one or other issue, e.g. that records from an exotic table have not been archived / not been deleted.
If you reuse the numbers you may get a situation that the program tries to create entries, but cannot because such a table has already an entry for this number and the transaction will end in a dump, hence the recommendation not to re-use the number ranges.