Yes, of course not all personal preference is caused by marketing, but much of it is. Actual personal preference is whether you prefer running or cycling, the marketing part is which running shoes or which bike you buy.

> or because the interior design appeals to their sense of fashion.

Surely you'll grant me that the sense of fashion is mostly marketing in sheep's clothes?

Yes, I'll grant you that the choice of a coding agent harness is influenced by marketing to a much lesser degree than eg cars. I still think Anthropic does marketing way better than OpenAI!

[Edit:] I use the pi.dev agent. I was heavily influenced by its marketing: minimal and mit-licensed and espoused by the HN crowd. Do you think I read the source code and made an actual informed decision? Nah...