The satellites operate in an extremely low orbit. At the end of their life they are manually de-orbited. If they fail, they will naturally de-orbit themselves in just a few years. They contribute to “space junk” in no way.
The precise position of all the Starlink satellites is known, and space is much bigger than you appear to be imagining, so the network will in no way impede lauching rockets.
There is no need to simply make stuff up about Starlink. There are plenty of reasons to hate Elon without inventing things.