The post is just an ad disguised as a guide and absolutely pointless. You know what else will show people how to disable gemini, googles own ai based search (which now sources protons guide, well above the actual search result that links back to proton)
Sorry if my aversion to advertising comes off as smarmy, im tired of seeing companies go from focusing on providing one good service like email and trying to become the next one corp fits all replacement for google. Instead of doing one thing extremely well it becomes a race to do as many things as they can and get people to replace one monolith with another.
Proton is the most recent to make this shift and its obvious they want to be like google but with "privacy" as a gimmic because its only private until they get a government order telling them to do something to unmask a user or monitor an email.