By "consumer cloud storage" the GP commenter likely meant to refer to services like Dropbox, Mega, etc.; not to IaaS object storage (which would more appropriately be called "commercial cloud storage.")
Ah that makes sense! I occasionally use Wasabi to sling files around so that's where my mind was when I made the original comment.
I do feel like you do end up paying for storage if you're sharing anything significant in size, which is where torrents become more convenient imho if both parties know how to use a torrent client.
Sure in theory it’s not the absolute fastest way but it’s massively more convenient and regular users aren’t sharing 1TB files.