I confirm this, I used SeaweedFS to serve 1M users daily with 56 million images / ~100TB with 2 servers + HDD only, while Minio can't do this. Seaweedfs performance is much better than Minio's.
The only problem is that SeaweedFS documentation is hard to understand.
In my experience, SeaweedFS has at least 3–5× better performance than MinIO. I used MinIO to host 100 TB of images to serve millions of users daily.