This is incorrect. Suggestions for carrying loads on touring bikes are for a 60%/40% front:rear split. Try loading 50 or 60 lbs on the rear wheel and going for a ride. The bike will handle like a drunken squirrel especially on downhills at nearly any speed. The bike want to wander all over the place. That much weight on the rear wheel will lighten the front wheel so much that steering will be vague at best.

Loading the front wheel does slow steering but that's not necessarily a bad thing. Dampening the steering makes the bike more stable. Steering input is slowed but under load this isn't a bad thing. The last thing you want is a twitchy quick steering bike with extra weight on it.

Blackburn and Bicycling Magazine did an engineering study long ago (back when Bicycling wasn't just a shill for new products ) on loading a touring bike and their findings are where the 60/40 split comes from, as well as the recommendation for low-riders on the front. Curiously, low-riders on the rear adversely affect handling.