Good advice even without the added weight of the technofascist coup context.
A lot of the ideas here are actually reflected in the EU GDPR, which requires anyone keeping any kind registry of natural persons to minimize the amount of personal data to be collected, processed and retained to only that which is consensual, necessary (contractually, legally, for protecting the life of the subject, or to carry out the duties of a public authority) or required for a purpose that's beneficial to either party and doesn't infringe on the rights of the subject.
Additionally, under GDPR personal data may not be processed for purposes that don't meet the above criteria even if the data is also used for another purpose that does. The data controller must also keep track of any third parties that might process the data and ensure they meet the same requirements for processing the data.
It also places additional requirements for processing "personal data revealing racial or ethnic origin, political opinions, religious or philosophical beliefs, or trade union membership, […] genetic data, biometric data for the purpose of uniquely identifying a natural person, data concerning health or data concerning a natural person’s sex life or sexual orientation".
Complying with the GDPR (properly, not in the "have a shitty cookie popup on the website" way) in itself means giving consideration to most of what the article is telling the reader to do. Fascist administration or no, all of this should be seen as a common sense best practice. Personal data should be treated as a liability rather than an asset to ve hoarded. Apply a healthy dose of YAGNI.
As for those whose business model is surveillance capitalism, you should fuck off. Nobody should be allowed to profit from cyberstalking people en masse. I hope one day we will look back on today's tech industry the way we remember the robber barons of the gilded age.