Since you asked, I think I'll explain myself.
I did look for sources. I estimate it would've taken about 15 minutes to collect the sources and link them. Basically if you do the search yourself, you'll see the first page or so of links is very academic ones. So I would need to scroll past all those, and read the abstract to find one that corroborated my argument.
This is not, as they say, a paid position: it's fair to say "that takes to long" and choose not to do this. Which is what I did here.
Now I'm not sure what the correct thing to do here was, in retrospect. I can see that an LLM is not a popular choice, though I thought it was a defensible compromise between "no source" and "spending too long finding actual sources."
I could've handwaved and said "academics say" without sourcing (probably the best choice).
I won't cite an LLM next time. I'll probably just frankly say "you can look it up, I won't do that because it takes too long, but..." I believe that's a fair compromise between "saying nothing" and "spending 15-20 minutes on a thankless research task."
The one thing I'm unwilling to do here is to just spend 15-20 minutes on this, however. I'd rather be downvoted, or simply say nothing.