The problem with flux is that it is corrosive. If you use just the flux in the solder it shouldn’t be much of a deal, but if you use more flux I recommend washing it off.

I use 99.9% Isopropanol or an ultrasonic cleaner with water for this. If you use water do not use soap or anything else just water. Also make sure it is completely dry before connecting to power.

I agree on your take, but I don’t think that “future scaling” is a concern for the most home users.

How could you tell it was secure?

Maybe he is just seeding Linux ISOs on the private trackers

You could try Puppeteer, but I don’t know if you can check third party cookies.

Also I can recommend using Apache Airflow for automation. It is like a fancy crontab with a webui and email notifications, and lots of other stuff.

EFF