tuta seem to have missed the mark then, incorrect details and not including noai.duckduckgo

turning ai off is a valid (and welcome) choice, but most people don't look at settings, the default is often ai on, and updates can also change them.

in Firefox browsers and its forks:

but then in a different part of settings:

the ai setting there was defaulted to on, even with ai supposedly completely turned off in the main ai section

So I would rather use a search engine (and browser) with the default that ai is trash.