Papirus Icon theme has grown with over +100k files. This means, it will use over 100k inodes in any filesystem. Systems with relatively small partitions will not be able to install papirus icon theme because of this even if there is plenty space available. Example: a 30 GB partition for / on any Linux distribution, with a lot of applications installed or other large icon themes, will have issues to install (system-wide) Papirus or will exhaust (o near exhaust) the inodes capacity of the filesystem in some scenarios and inadvertently DoS the filesystem just by installing papirus icon theme.

Strongly suggest to adopt a similar scheme as done for Numix: They have a core theme and a complementary applications-only theme. Or to split icons for proprietary applications into a separate git repository. Or at least to warn users in the README.md file about the big number of installed files and potential inode capacity exhaustion in some filesystems.