trustworthy
They are recommended on privacy guides: https://www.privacyguides.org/en/search-engines/#brave-search I generally trust privacy guides, although I don't use Brave Search.
CEO
Their CEO is anti-vax and homophobic. Brave Browser (not search) has had some controversy around including crypto, replacing ads with their own, and having had inserted affiliate links into the URL bar in the past.
censor stuff
Hard to say, the job of a search engine is to show you what you want to find.
data collection
There is telemetry that can be turned off.