Yeah the article describes this a bit confusingly. They do have access to the capital they raised, they just don't have control over the subsequent flow of capital in and out of these tokens. For example:
One source said an early investor who acquired a tranche of tokens at a price of $0.37 is actively seeking to sell for $1.30 — potentially a 3.5-fold increase for a token that hasn’t left the gate yet.
That sort of flipping (or "capital flow") isn't typically possible in startup fundraising because investors are restricted from selling their stock.
For a normal startup it would look bad if your investors wanted to sell their stock immediately because they would be signaling a lack of confidence in the future. For this Telegram ICO, it isn't quite the same, but some people might look at it as a bad sign in a similar way. To me, it is hard to tell what the underlying basis for any valuation of this ICO is.