You are absolutely right, I’ll fix it asap!

Security. The more popular a piece of software gets (including operating systems), it becomes a bigger attack surface for malicious actors to use.

Fundamentally, Windows security is not really that much of a swiss cheese people usually say it is. It’s just that more people (researchers and malicious actors alike) are actively looking for vulnerabilities in it.

Hadn’t heard about deSec until now, seems to be run by some cool privacy minded folks in Germany:

https://desec.io/

I guess you already know about the options, but for others:

Find the cheapest VPS out there and have a Wireguard tunnel between it and your home network. Run ddclient or similar on the VPS in case the public IP changes.

For the same price and power usage as the Pi?