"I googled this" is only helpful when the statistic or fact they looked up was correct and well-sourced. When it's a reddit comment, you derail into a new argument about strength of sources.
The LLM skips a step, and gets you right to the "unusable source" argument.
Still, I will fight that someone actually doing the leg work even by search engine and reasonable evaluation on a few sources is often quite valuable contribution. Sometimes even if it is done to discredit someone else.