There is a lot of misunderstanding regarding Chernobyl. There were 4 reactor units, 1 of which blew up during a disastrously unsafe experiment during a shut-down cycle. The other 3 reactors continued working afterwards and the final one was shut down in the late 90s, more than a decade after the accident.
The RMBK reactor is considered an "unsafe" design, yet it only failed when an experimental procedure was executed despite the conditions being WAY out of spec, and multiple safety systems were disabled that prevented the system from recovering. Alarms were ignored that correctly assessed shit was going downhill. The negligence was astounding.
The "unsafe" assessment is correct, in that the system wasn't designed to inherently shut down in disaster conditions and the control rod design caused a short power spike during insertion from full withdrawal. However, you had to have a monumental fuck-up on the operations side to get this to happen.
This would be roughly equivalent to people saying airplanes aren't safe because a pilot decided to cut the engines at 30,000 ft and let jesus take the wheel (lol).