Russian TV channels have not been banned. Two propaganda channels have. Might look like semantics, but it's not. The fact that Russia 1 or NTV have not been banned is important.

In Germany they have very strict laws against the use of extremist symbolism, for pretty obvious reasons. Not only the swastika. The black standard of the islamic state or the hammer and sickle are also covered, for example. There are contexts in which they are allowed, obviously (art, education, research...) but this seems to fall in line with the usual cases.