EW has been out for nearly 3 years now and has finally completed it's patch story. Spoilers are now unavoidable really (at least, that anyway). The more important thing is context, which that statue gives none - it's just Zodiark and Hydaelyn's actual forms
(and for the latter really, I'm still not entirelly convinced that was really all Hydaelyn the Primal anyway, and just Venat's natural transformation ability which all unsundered Ancients possessed, empowered by the aether of her followers and from the Mothercrystal, but that's headcanon territory).
Really, you'd get more spoilers browsing 'Final Fantasy XIV Endwalker' on Youtube than what's shown on the launcher and main page.