I mean, he has decades of experience now, and should know exactly what works and what doesn't. The swingarm issue he says happened because of poor workmanship, and not from poor design. The Voima swingarm had a 20% failure rate. Sonni 0%, meaning they sorted out the problems, but too late.
Still riding my Voima on original swingarms, and it is really, really a great bike. I use it with Öhlins TTX22M.2 250x75mm, and Fox 40 and 2.6 x 27.5 tires on carbon wheels with Shimano Linkglide 11 speed mechanical, 36t and 11-50t, 220mm Oneup V3 dropper and Hope Tech 4 V4 brakes.