Lots of leading AI researchers actually are taking it seriously, including of course OpenAI, and recently Geoffrey Hinton who basically invented deep learning.
Okay but as far as I know Geoffrey Hinton isn't an "A.I. Alignment Researcher." He was fairly dismissive about the risks of AI in his March 2023 interview and changed his mind by May 2023. I'm not sure that says much about the A.I. Alignment Researcher field.
The commenter above assumed that nobody besides alignment researchers are convinced by their arguments. Now you're complaining that a leading AI researcher who's convinced is not an alignment researcher. I guess I'll give up on this subthread.