Yes, but the rpm has been created after a private discussion with nextcloud team.
Basically, the aim of the rpm is to have an installation which looks like as a manual installation.
We also talked with James Hogarth, who is the actual maintainer of ownCloud package.
He already submitted a NextCloud packages to EPEL: https://bugzilla.redhat.com/show_bug.cgi?id=1360482
This rpm is built following all CentOS guidelines. I think we will switch to it, when available
Of course, anyone want to try the commands on a clean machine?
After the test, I can open an issue for the enhancement.