But the new waves of "users" are far less useful or relevant users than the ones that came before them.
You can tell that because the number of transactions being sent per day on the BTC network hasn't increased by the same percentage that the price has - while the price has risen by about 1700% or more, the number of transactions has
less than doubled.
Also, the transactions themselves are less useful. You can tell that because the
volume of Bitcoin has increased from around 100-500 million dollars at the start of the year to far over 10 billion dollars now, so far more of the transactions are going back and forth from exchanges. Also, Steam and Fiverr no longer accept Bitcoin, so merchant usage is far harder.