No. Newbies will come after price raise.
So price raise is vital for Newbies.

And since most rich people are not rich by luck, they are probably already aboard.
Without poor no rich.

No, scarcity is an big influential factor for the bitcoin price index. Bitcoins are produced during the mining process.  The reward is 25 bitcoins per block (approximately every ten minutes) until mid 2016, and then afterwards 12.5 bitcoins per block for 4 years until next halving. This halving continues until 2110-2140 when 21 million bitcoins have been issued.
Other influential factors are investors and panic buyers/sellers.

But are newbies vital for Bitcoin itself?

Making money sounds so paradoxically to me.
Bitcoin is money.
Making 'money' means for a lot of people making fiat (dollar, euro's, etc.)
But for me making money in bitcoinland means making more bitcoin!

Hmmm ok.. So what in percent, how many bitcoin users who are in the veteran category?

Yes, newbies follows the upside, but many soon washed out in down any trend that follows.