(it doesn’t tie your identity to the content you’re viewing, only the use of your credits)
The website can’t know this, but the government can easily (and I bet will) link an identity to a token, and know where and when it is used. It can also request metadata on usage of a token, which websites will no doubt want to store.
That the government can track this sort of thing is bad enough, but I’m especially concerned that it or both parties will leak/share/sell their databases, allowing anyone to do the same.
For instagram I use imginn
There used to be a few more, even open source ones like bibliogram, but meta is quite aggressive in fighting them.