Can't say I agree.
I've participated in a business startup hackathon. Back in 2018, before the LLM era got underway.
I did a hell of a plan, talk, etc.
Who won? 'Uber for ___' won. I forget even what the sell was, but it was basically ignore laws, undercut until leader, kill any competing businesses, jack rates.
Slop has always been in business and business adjacent occupations. Humans also can generate voluminous amounts of crap too. Llms are just faster.
As a business plan, the "Uber for _" approach you describe does work sometimes to make money, distasteful as it seems. The Ur-Uber used it very successfully.