Higher fees don't remove the upper limit of 7 transactions per second. Is that so hard to understand?
Neither does XT altcoin. Is that so hard to understand?
XT is not an altcoin. And it does widen the bottleneck until a better scaling solution is in place.
The point is it's still not a very good solution and the bottle neck would not be present without the spam/dust transactions.
It's really that simple.
It's a kick the can down the road situation that amounts to Gavin and Mike throwing a hissy fit.
Do you read the BIP's? Its not like core are sitting there saying 1mb is good forever, just that the solution isn't to suddenly throw 8mb patches into the mix. Further XT is basically Gavin and Mikes coin, are you confident that you want to trust the future of the project to these two dictators who, even if other devs join them on XT, could just do the same thing further down the line when they want to change something else.