It's not abandoned. Access still has an engineering team working on it, and that team still goes to conferences to talk with their users. Source: I work in the same org as them, and ate lunch daily with a few of them before the pandemic hit.

Sigh.

Silverlight had positive sounding blog posts, etc... right up until its official death.

These megacorps never officially announce a product's demise, not while they can sell it. You have to read between the lines.