FilterProfiler does not record profiling stats of global filters on remote wikis. The stats reported on https://meta.wikimedia.org/wiki/Special:AbuseFilter concern only writes on metawiki. Global filter maintainers would definitely deserve some information about their performance on the appropriate scale.

Profiling stats are stored temporarily in cache using WRStats, and we can use GlobalEntityKey for global stats. However, the new keys will be under significant pressure, because all edits on the wikifarm will cause an update. (Note that the number of keys is proportional to the number of active filters.) I'm not sure if there is already something like this, and the infrastructure can handle it. If not, we may need a compromise like sharding writes (e.g., T306589) and doing reduction on reads.