Hora, wouldn't increase wear but the shock will be tuned to behave in a certain way as you move through the stroke. You'd have terrible small bump response at the very least.
RE: the pedal feedback and chain growth, I can understand why logically it seems like a negative and you can't understand why anyone would like it. If you're a strong high cadence pedaller, it doesn't have that hook up feeling because the chain growth stays more consistent and doesn't tug on the legs, it just firms up a bit. It will defeat you if you're unfit or tired but it's a bonus if you're fit and fresh. The harder you attack the bike, the better it rides, and this seems to be the case up down and along. You tend to approach techie climbs "balls out", pedal pedal and then boost into technical moves. If you just trudge on up, it's not going to work so well.
I've blindly evangelised about the bike for the 2 years I've had it, I've ridden other bikes, nothing compares… for me. But I'm also starting to understand why it isn't for everyone, there's a misconception that it's purely a great beginners/nervous riders bike – it is in that it's stable and safe feeling. But in many respects it's not a beginners bike because I think to get the most out of it, you have to literally try and kill it! To this it just responds so positively, and this is why so many rave about it.
Man, what a ramble… 🙄