Of course they will. They are not 'shutting down soon'. They will be shutting down by the end of autumn.
They don't want to scare their users and confirm that it really is shutting down immediately today, or next week. This account is damage control at its finest and Google will release a statement and then wind all of Stadia down, including that Twitter account in denial. Given that Stadia failed in the pandemic, it already failed in general.
I mean, I did say that this information was given to me from the future [0] so I've already watched this unfold once. Now it is unfolding for the second time for real.