Someone made an interesting (to me) point, that as regular bikes are getting heavier for a given application, at significant cost, why wouldn’t you just add a motor and battery? There a a number of trail ebikes that are a good chunk less than 45lbs now, so the ‘less manoeuvreable on the downs’ argument disappears, and the weight is better distributed than it might be on a regular bike, in the DT and BB area, rather than the wheels etc
Building a 30lb enduro bike nowdays is a tough order, if you keep to sensible tyres and wheels, even a 30lb trail bike, your are spending some serious cash.
Latest slash frame is 0.5kg heavier than its predecessor, new spesh enduro is similar weight gain.
More gears, more weight
More travel, more weight
More seatpost drop, more weight
Bigger wheels, more weight.
The main issue with the trail emtbs is the spec is a bit lightweight and the geometry is bobbins. Spesh stumpy evo with the levo sl motor, sign me up (along with a load of range extenders, or a swppable battery)