There's insider attack resistance and there's evidence that the chips hold up against real forensics attacks. They perform better than iPhones in Cellebrite (leading digital forensics company) support matrix leaks.
Other options also rely on closed-source security chips or have none at all, and are demonstrated to be much weaker against AFU attacks or are able to be extracted in BFU and then brute-forced if there's a weak password.
Google is a dodgy company. Placing any trust in them is foolish.