Where does this style work?

It works wherever plain text is accepted — bios, usernames and comments — because the letters are real Unicode characters, not a font.

Can I copy it together with other words?

Yes — copy the whole output and paste it next to plain text; every letter stands alone.

Heavy blackletter — gothic headers

Bold fraktur is the heavy blackletter block (𝕬-𝖟) — gothic headers with extra weight for dark aesthetics.

𝖄𝖔𝖚𝖗 𝖙𝖊𝖝𝖙 𝖍𝖊𝖗𝖊