In my experience, the only problem with swing-axle suspension is talentless journoes with whom I wouldn't trust with a supermarket trolley. They have trotted out the same old tommyrot for the best part of 80 years, and still do. Bless 'em.
Mercs with swing-axles included the 300SL coupe that won Le Mans, 1952, and the GP cars of the mid 1950s, and the 300SL road cars, Beetles, 356 Porsches et al. There's just a chance that Rudi Uhlenhaut and Ferdinand Porsche knew a little more about engineering than the angry twits who constantly drivelled on in comics in the hope of making a name for themselves.
Vic Elford started his rallying career with a Triumph Herald. "Great little car," he said, puffing on yet another cigarette...
Down many years it has been my fortune and misfortune to share cars on press launches; this is how it is: sent off in pairs to evaluate a new car. I wonder I am still alive.
Yes, swing axles will travel the length of their arc, but the speed at which this occurs during hard cornering is always extremely high. And when it 'flicks' you bang on opposite lock, and all is well. It's fun. Those who can't do it freeze, and then criticise the engineering, whereas the real fault lies with a total lack of talent - the beige-socks brigade!
Early (1969) 917s? Wandered. Yep. At speeds never previously attained. Vic Elford loved every 917 he ever saw and drove which is just one reason for people at Zuffenhausen today continuing to hail him as the best driver the company ever employed.
No, of course, the 917 didn't have swing-axle suspension, but this didn't stop David Piper saying: "You know, when we tried the 917, you know, it jumped all over the place, you know, and at speed, you know, it, ha-ha, behaved like a Vokeswagen (sic), you know, with, you know, positive camber, you know, at the rear, you know."
Have a look at Piper's lap times for Spa, 1970, please. And then compare them with those of Siffert and Rodriguez.
I stopped listening years ago. One grows old and very, very tired...