I should say two things. Tailscale is amazing and I love it. The system could not exist without it, or I'd have to have at least ten more people in my team to manage all this 24/7. It's working, and it's good enough.
That being said, you do need to lower your expectations: it's not as good as "the internet". The latency spikes periodically, the connection drops sometimes, the MagicDNS just magically stops working or interferes with the system. Since we have many users, we've encountered every possible problem one can encounter, and then there's still something new you'll see tomorrow.
In any case, we believe in Tailscale and its vision, it's a categorically new approach that simultaneously gives you the control on hardware, reduces the cost, and improves the security. Our first big production server was a 4-core Linux Laptop!
We love Tailscale and we wish the product prosperous life and development. Thank you TEAM TAILSCALE!