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8 months ago- It means you’re letting a different company (VPN provider instead of ISP) see everything you do. In countries with sane privacy laws (i.e. not the US) this is very often a net negative for your privacy, as your ISP will be bound by your country’s privacy laws and most VPN providers are foreign (and often based in the US).
Good blog. You touch on this point in the blog but IMHO it should be one of your main talking points.
Yeah that’s completely normal, looks absolutely fine to me. For more info on how linux uses memory I suggest reading https://www.linuxatemyram.com/
To add: that link suggests looking if your swap usage is changing. Linux is quite happy to stuff some memory that isn’t actually used in swap. If it was right about it not being used you should see the swap usage not changing much, so your SSD isn’t really being used either apart from the initial swap-out. If your swap usage keeps fluctuating wildly there is more going on which might warrant further investigation.