I think otherwise the liquidity of the tokens through other exchanges will influence on it to rise but not to collapse. As more investors can join DexAge ICO and lot of people already using LaToken as they hold tokens for other ICOs as well in this way helping the investors to keep it up in one place so it is also convenient touch.
I'm kind of agree with both of you, usually it brings boom to ICO when it's spread around as it attracts new investors and new investments but sometimes a lot is not always good it can push the price opposite but listing on a couple of exchanges won't do any hurt even push it forward. I think in current stage DexAge is holding steady.