It sure looks that way, but asking to be sure.
We want to reject high score spam (or bad attachments) before accepting (OK 200) them in postfix. [We want to reject mail before it is accepted and then we have to deal with quarantine etc. So, having rspam run as a pre-accept filter is pretty important. ]
As I noted, it looks like it does, since there’s a setting for spam “reject” - but that could also be a “bounce” condition, instead of pre-accept.