SQLite is explicitly not safe to be used on arbitrary DB files and there’s a nontrivial amount of exploits on it from DOS to heap overflows to remote code execution that stem from untrusted SQL queries or processing untrusted DB files [1].
At a minimum you have to follow [2] but you don’t get to say “it’s safe to open malicious files or process unrelated queries“ and “SQLite has a good security track record because all our CVEs are only from untrusted queries and malicious input files and CVEs are useless anyway“. Those are facially contradictory positions likely written by different team members that reflect their individual perspective rather then there being a well thought or security stance (at least in my opinionated viewpoint).
[1] https://www.sqlite.org/cves.html
[2] https://www.sqlite.org/security.html