[mhmmmmmm]

Interesting sidenote: The donor also left a message for two other operating systems, "Qubes address? GrapheneOS address?". https://etherscan.io/tx/0xca5bb04204f446f73a510ea02b2bd7c01e...

[Scumbag24]

Qubes has now set up an Ethereum address(Mainnet): https://www.qubes-os.org/news/2022/09/29/qubes-os-project-no...

[svnpenn]

no message like that is on the page you linked

[usmannk]

Press "Click to see More". Then the message is there, displayed as bytes encoded into hex. There is a toggle to display that data in UTF-8 format too.

[iancnorden]

Change 'Input Data' to utf-8 via 'View Input As' dropdown.