All I know is this:
Longer chainstay is better said nobody ever.
Rear 29 makes turning harder and is less agile.
Less travel in the suspension is a benefit to who?
Cheaper suspension and lower end dampers.
Higher BB for people worried about pedal strikes but also not good for handling.
Steeper head angle offers some agility back at the cost of downhill stability.
The 29 was engineered to appeal to one type of buyer and that was people considering a Levo. It's now a direct competitor of the probably highest volume ebike.
In bike recommendations people say levo and they dont even know why they say it. It's like they are pre programmed. In the enduro class shootout someone complained there was no Levo. They dont even know what the Levo is they just think it should win because their mate said so. The fact it didnt win it's own class let alone get considered in the enduro class speaks volumes about the type of riders who buy what.
The 29 is designed to appeal to that rider. It's less hardcore. It's less expensive and it takes less skill and strength to ride. It is less capable downhill and designed to take less big hits. It runs narrow tires and gives up structural strength in the rear wheel for lower rolling resistance. This is the very nature of a trail/XC style bike. In the same way a motor makes the downhill features easier to live with the motor does the opposite to a trail bike because it adds weight.
As the ebike market grows and becomes more affordable the rider demographic will start to change. Younger riders with higher skill and strength with less fear will be looking for more capable enduro and downhill style bikes.
The right rider can do a lot on both type of bikes but I'd not want to be hitting 6 foot drop 12 foot distance gaps on a 29er with 150mm travel and a rhythm fork.
wow your brain has truly been taken over by The marketing dept.
Lots of reasons more travel is not always better. Same goes for chainstay lengths! On an ebike especially.
Also and most importantly it’s the rider not the bike, go watch skills with Phil video of him launching crab Apple hits on a 140mm trail bike.
Your reference to less skilled riders preferring this bike is just a lame and lazy take. I’ve been riding 20+ years and choose this bike over the mullet, I’m hardly a new rider just like a mullet is hardly a new concept! Was tried many times years ago and I thought it sucked then too... but obviously it doesn’t it’s just my opinion