Can someone explain Wigglesworth's comments on escort runners?

From The Guardian - https://www.theguardian.com/sport/2024/nov/12/rugby-union-england-south-africa-felix-jones-rfu

England’s coaches and players, meanwhile, are unhappy with the recent official clampdown on “escort runners” who impede players chasing after high kicks. Wigglesworth believes it is already having major consequences.

“I think the game has changed in the last two weeks,” said the former England scrum-half. “I’m not sure it was intentional but it’s definitely changed it. They’re going to create a lot of contestable kicking, that’s for sure. How you structure your attack and your possession sources will slightly change. You take one thing away and you now see guys shoving and getting penalties. There are always unintended consequences of anything you try and do with good intentions.”

There are even fears that the crackdown, designed to encourage less congestion around the ball catcher and more unstructured play, will have the opposite effect and deter coaches from picking diminutive full-backs who suddenly have less protection.

“I’m not sure it will have the desired effect of wanting clean contests,” continued Wigglesworth, whose side were frequently beaten in the aerial contest against the Wallabies by a soaring Joseph-Aukuso Suaalii. “A clean contest is two guys trying to catch a ball, not one guy who doesn’t have to catch it. Will it lead to more kicks? 100%. There is zero doubt it’s going to lead to more kicking. I thought we were in a good space before.”