Proj version 8.0 (and proj-data 1.5) have been released: https://lists.osgeo.org/pipermail/proj/2021-March/010089.html
*** Bug 1936128 has been marked as a duplicate of this bug. ***
FEDORA-2021-637adcfe59 has been pushed to the Fedora 35 stable repository. If problem still persists, please make note of it in this bug report.
Will 8.0 get pushed to the f34 repos?
No, it was already pretty painful to get this into rawhide (many packages turned out still relying on the deprecated api, in one case I had to statically bundle proj7 because porting was so painful).