Four things do most of the work.
Their profile and rating come first, you can say hello in text, and video opens only when you both agree. How trust works.
After every conversation you rate the other person. A bad rating follows the account, so being unpleasant costs something here.
Blocking is instant and permanent — they vanish from your matches, search and messages, and you are never paired again. Reports go to a moderation queue; threats, hate and anything involving a minor are escalated immediately, and you're protected while we look.
A report about a person belongs here and stays private. Something that is simply broken, or missing, belongs on the feedback board, in public. Something urgent: [email protected].