Surge brakes are brakes. But they rely on the slowing of the tow vehicle - however a surge braked trailer, properly configured, should not “shove” a tow vehicle because the actuator is in the hitch and that much pressure would lock up the trailer brakes. Something is not properly configured there, but that’s besides the point.
I wouldn’t tow a conventional trailer with a wrangler. I have towed my bockmann with a v6 wrangler unlimited and it was fine, but that is a specialty trailer.