I get what you mean man but it's not the best way to solve it, noone should have to pay a subscription just for a patcher download it doesn't make sense to me, unfortunately I'll have to wait for an update or a comment from someone with more information.
The patcher is 17gb uncompressed, because it reverts all the changes from 12.12 to 12.11. Basically, the more changes between the 2 client versions, the large the downgrade patcher is going to be.
I provided 2 links to ensure people have a way to download it, it isn't as convenient as people would've liked.
There are only so much you can do with free file hosts.
Like you said, no one should need to pay just for a patcher download. I'd rather not spend money on a premium file host solution just so people are able to download without restriction.