GCSFilesystem creation is surprisingly slow

this snippet takes ~24s to run on my laptop in Germany:

# /// script
# requires-python = ">=3.11"
# dependencies = [
#     "fsspec",
#     "gcsfs",
# ]
# ///
from fsspec import url_to_fs
from time import time
url = 'gs://gcp-public-data-arco-era5/ar/full_37-1h-0p25deg-chunk-1.zarr-v3'
if __name__ == '__main__':
    start = time()
    _ = url_to_fs(url)
    elapsed = time() - start
    print(elapsed)

26s seems a bit long for string parsing -- clearly something else is going on inside this function -- but I'm a bit surprised that there's anything else going on side here, given the apparent simplicity of the URL. Is this expected behavior, or something that should be fixed?

Start by running the provided Python script and tracing the fsspec.url_to_fs entry point for the gs:// URL and GCSFilesystem creation. Determine what accounts for the delay and whether that behavior is expected; done means documenting the cause or identifying a concrete, testable fix.