Valuation matters quite a bit for continued funding.
Initial high valuations mean the founders get a lot of initial money giving up little stock. This can be awesome if they become strongly cash-flow positive before they run out of that much runway. But if not, they'll get crammed hard in subsequent rounds.
The more key question is: how much funding did they raise at that great valuation, and is it sufficient runway? Looks like €450 million plus an additional €120 million in convertible debt. Might be enough, depending on their expenses...