Is shortwave radio any good in 2021 ?

I’d argue very much that it is, and despite a downturn with the advent of internet and satellite radio streams, shortwave will remain well into the future and in a far more robust form when those possibly get shut down from one means or another.
One of our contributors, Parachutin’ Frogman, has a regular show on WWCR that also gets posted here and one that I’d hope you consider supporting.
And if you’re in need of a shortwave receiver, you can’t go wrong with the Tecsun PL-600 as a grab and go package with a far better audio reception than some of the smaller units out there.