7 languages and a feature nobody to a rounding error uses? No, I don't consider that to be a research, economic, or technical success.
Honestly, I'm not sure if you posted this is support of Horizon or against? The Horizon budget for 2021-2027 is €95.5 billion or ~€15 billion per annum. If a headline "success" is an unfinished implementation of translation in Firefox of a translation engine (Marian) built by the Microsoft Translator team, then it's safe to say Horizon is an unqualified failure.
Honestly, I'm not sure if you posted this is support of Horizon or against? The Horizon budget for 2021-2027 is €95.5 billion or ~€15 billion per annum. If a headline "success" is an unfinished implementation of translation in Firefox of a translation engine (Marian) built by the Microsoft Translator team, then it's safe to say Horizon is an unqualified failure.