> Normal users don't use text like this

I think that depends on the users. People copying and pasting bits of text that was in English or another common language— think documentation, code, news articles, tweets, etc.— with a different character set could be problematic.

Also, 𝒮ℴ𝓂ℯ 𝒜𝓅𝓅𝓈 marketed as "𝔽𝕠𝕟𝕥𝕤 𝕗𝕠𝕣 𝕤𝕠𝕔𝕒𝕝 𝕞𝕖𝕕𝕚𝕒" would be ℭ𝔞𝔲𝔤𝔥𝔱 𝔲𝔭 𝔦𝔫 𝔱𝔥𝔦𝔰. (math symbols) A user base with young people getting bounced or shadow banned for trying to express themselves or distinguish themselves from their peers would be like ಠ_ಠ (Kannada letter ttha)

I think targeting the language they're using is a better bet.

¯\_(ツ)_/¯ (Hirigana letter tsu)