Considering it took this long for them to figure out "empty user agent means it is a bot" and "well-known vpn may be used by bots", and old.reddit still apparently bypassing this, I'm going to guess they are not going to have much success.
if they are blocking proxy and VPN connections, when they detect an unusual amount of requests from your IP they'll ban it and you won't be able to circumvent it changing your user agent.