> nobody's gonna figure out which specific you (in this case) read.

It also has the downside that you can be accused of reading it all... For example, if there was some illegal content in there (child porn, nuclear bomb plans, extremist material, etc.), then you have now got that content on your computer for when the police are looking for a reason to imprison you.

I say this from a country which has put people in prison for possessing text which could easily be accidentally be downloaded by this 'subscribe-for-offline-reading' feature. [1].

[1]: https://www.bbc.co.uk/news/uk-england-northamptonshire-58926...