The “Looney Tunes” and “Flintstones” content was licensed to HBO Max from Warner Bros. under an intra-company deal. Those licensing agreements expired at the end of 2022 and HBO Max did not renew them, as it seeks to reduce content expenses. It’s unclear whether the “Looney Tunes” and “Flintstones” content that is no longer on HBO Max will be available other streaming platforms.
Source: HBO Max Removes 256 ‘Looney Tunes’ Shorts, Three Seasons of ‘The Flintstones’