Thank you for your kind words, please look at the HN comment guidelines when you have a chance. Your point would have been an excellent correction if shared thoughtfully, but it's all negated by the name calling and personal attacks.
Samsung says you need to have the devices on the same Samsung account, same WiFi with Bluetooth enabled in https://www.samsung.com/us/support/answer/ANS10003445/. But I couldn't find more details on how the actual communication happens and if anything leaves the local network. The Samsung article does not go into details how this works, it does not even say explicitly that it uses the local network only. I tried to search for it, but Googling failed me on this.
But I was able to disable that sharing feature, so that isn't my main complaint, it's their clipboard data collection - [1], [2], [3]
[1]: https://cybersecuritynews.com/samsung-one-ui-security-flaw/
[2]: https://www.tomsguide.com/computing/online-security/samsung-...
[3]: https://windowsforum.com/threads/samsung-clipboard-security-...