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 slanted sans — dynamic bios

Sans bold italic (𝘼-𝙯) slants AND thickens the sans alphabet — energetic bios and dynamic captions.

𝙔𝙤𝙪𝙧 𝙩𝙚𝙭𝙩 𝙝𝙚𝙧𝙚