What's the destiny of the standalone player? I was under impression that that was the main loss, as in Flash player available only as Chrome plugin = no standalone player. If that's not the case, Adobe may consider improving the wording in that manifesto :)
Again, as I said it before: very few Linux users would be interested in consuming products running in Flash player runtime, but many developers would be interested in developing on Linux for Flash player runtime. To make it more obvious: there are next to none Mono applications intended for use on Linux (well, there might be few, but those are experiments). Yet it's not uncommon to develop for .NET on Linux because of the personal preferences of programmers who do that, because, frankly, Linux offers much more to a software developer, then any of commercial OS'es does.