There is a Unicode symbol for anything. TIL there exists the COMBINING LONG SOLIDUS OVERLAY (U+0338) symbol, which makes any symbol appear struck through.
I will from now on use it in READMEs of my projects that are in public domain: ©̸
To be fair, it's hard to make it look neat: the font support is at times terrible. Helvetica and Helvetica Neue look great. Inter (used in Codeberg) is also not bad, so I'm keeping it
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