Article title is a bit misleading. Just glancing through I see he texted at least one minor in regards to this and distributed those generated pics in a few places. Putting it all together, yeah, arrest is kind of a no-brainer.
Ethics of generating csam is the same as drawing it pretty much. Not much we can do about it aside from education.
FBI Arrests Man For Generating AI Child Sexual Abuse Imagery ( www.404media.co )