I agree. Whilst the current laws allow for this sort of tactic it doesn't feel like it's what rugby should be about. It's a skill of course and well marshalled it is extremely hard to defend against. But it always looks like you've got half a dozen players offside. Appreciate they're not according to the laws, but that's how it always looks
A driving/rolling maul is
precisely one of the things that rugby should be about. Setting one up isn't a matter of luck and requires a great deal of skill. Keeping it moving, and moving forwards towards the oppo goal line, requires huge strength, teamwork and is one of the most exhausting things you do as a forward on the park. Well built and executed it is almost impossible to defend against, and once it crosses the goal line and ends grounding the ball is far from a formality.
What I find strange is how few penalty tries get awarded at elite level from rolling mauls that collapse in the red zone or in-goal, and how infrequently referees sanction defenders for all the manner of illegality they apply once the oppo start trundling forwards.
Provided the ball is at the back, and the ball carrier and all the players in front of it are properly bound together, ie full arm, no offsides. Any more than there would be if the ball was at the base of a scrum or ruck. The issue I have is too often, and too often at RWC in particular, the ball carrier is holding on with mere finger tips to the guy in front of him. Smacks of classic truck and trailer to me. But that is a question of materiality and the elite refs apply different standards to the rest of us.