Why is `RUSTC_BOOTSTRAP` so actively discouraged?

CAD97: > "fortnightly"[^1] release > > [^1]: Fortnightly would be a technically incorrect but cute release channel name. A technically correct but obscure option: sesquimonthly (1½-monthly), sexaweekly (6-weekly), or octantly (⅛-yearly). love this! (and I agree with/like your more serious suggestions)