The Witcher and Cyberpunk I’ll give you, but Mass Effect definitely fades to black before getting to actual sex, the other two are mods. I wasn’t saying sex in games doesn’t exist, but if we’ve gotta go back several decades for a handful examples, that doesn’t feel like something that’s “common.”
I’m doing this now as I learn Unity and come back to C# after a couple decades away. It’s great for helping with syntax and reminding you of libraries, also with debugging steps as you mention. I haven’t had it full on hallucinate, but it has given me suggestions that fail to do the thing I specifically asked it for. I also went down a couple rabbit holes following its suggestions to later realize there was a much simpler answer that it didn’t tell me about. All in all, I’d still highly recommend it for my situation and OPs. If you’re able to follow the logic and point out the flaws, it’s a hell of a lot faster than googling or following tutorials.