Sweden and Britain both have abuses of power. The Swedish king has used his immunity from prosecution to commit crimes. Sure, not murder, but he's done "fuck you, I can't be prosecuted for reckless driving. Luckily I didn't kill anyone, but no thanks to me".
Other parts of the royal family have claimed immunity when committing crimes (traffic violations), even though they don't actually have it.
So the king and his family have been abusing their power. It's a slap in the face of the whole country.
Look elsewhere in this thread for abuses of power from the British royal family. Also, you know, Prince Andrew…
Immunity from prosecution is hardly "some indirect ceremonial power", especially when it's has ACTUALLY been used to commit crimes and getting away with it.