I suspect it just isn’t well known. I used it for a while in my early days in Linux, which was back in the late 1990’s, and i honestly haven’t heard much abiut it over the years.
I do remember being impressed at the time. I think most people stick with the defaults for whatever distro they first choose. Since i was using Slackware back then, there was not a default choice, so i searched and experimented.
The problem with these tariffs, implemented in this way, is that the less wealthy has to shoulder the shock and most of the loss of wealth, while the most wealthy solidify their place in society on several levels. The social balance of power further shifts toward the billionaires.
Tarriffs are better applied for protecting existing small and mid-size businesses in danger of being wiped out by huge foreign operations, and protecting industries that have national security roles.
The key here is they would be applied before we lose the capacity - not decades after we already adjusted to the loss.
On this side of the curve it is more productive to subsidize operations that can (re)build the capacity we seek. Biden’s work with TSMC was a prime example. This approach is less disruptive. Even then, targeted tarriffs can be productive.
We could have saved our solar industry. We decided to let China sell priduct at a loss until their competition went out of business or left because no profit could be achieved. This is where tariffs make sense.
I had success using openVPN. I set it up, generated certificates, installed it on my phones, tablets, and laptops.
It won’t work when using an external vpn like Express or Mulvad, but while using it, you have secure connection to home. Once done with the home network, turn off the vpn, turn on your commercial vpn.