We don't want to be even more reliant on optimizing for something we have little to no control over right? Maybe this is more of a mindset/approach thing. But I like making things where I can communicate the guarantees and assumptions with confidence.

Note I'm not saying we shouldn't care about search engines. They are extremely useful and important. I'm saying if you have the type of content that benefits from being navigated via search, then consider direct control over this.