Technical twisty singkletrack, is fun, stick yer borin massive wheel towpath borinness up yer ass!
LOL
A couple of phrases spring to mind… "It's the rider, not the bike" and "A bad workman blames his tools"… 😉
Seriously though, 29ers are good in their own way. I was sceptical, had a go on one (EIASF's Jones actually!) briefly that got me thinking about them… Eventually bought one 2nd hand very cheap, and I like it. It wouldn't be my first choice say if I was going somewhere like Afan, or even the Alps (I have 2 full suspension bikes I'd rather take instead), but that's probably more due to the fact it only has 80mm travel suspension forks and no rear squish than the wheel size.
Anyway, on my 29er I have beaten loads of people on 26" wheeled bikes down technical trails, I have also been passed by loads of people on 26" wheeled bikes on the flat or up a hill. Explain………….. 🙄
I have also seen people do 10ft drops on a 29er with 1.8" wide tyres and skinny rims. I have even seen people with (and you'd never get this!) only one gear on their bike (sometimes with 29" wheels, more normally with 26", one even with 650B!), manage to ride up a hill! 😮