MetropleX Sorry but this is simply wrong!
Your "Battery Management Advice" is the same kind of shitpost like one could find on reddit or 'infamours 3 letter forum', making outragous claims without evidence or citations, while assuming authority with mocking anyone trying to disagree with it, with statements like 'It's not 2005 anymore.' It's not helpful nor correct and potentially harmful. Together with the 'advice' on USB cables and USB ports on PC, these 3 spheres is misleading at best and wrong or even harmful at worst.
MetropleX you don't need to worry about the 80% charging etc and it isn't relevant to modern devices with onboard controllers with charge bypass.
This has been shown as incorrect, with citations. https://discuss.grapheneos.org/d/2585-the-never-ending-question-on-charging/25
This whole issue, along with the USB cable and USB ports has been brought up and apparently ignored by whole GrapheneOS team. Instead of supporting their claim with evidence and data, they choose a github shitpost.
It's not 2005 anymore, you need to support your claims with data and/or citations.