No,its not too late to buy bitcoins as bitcoin's price rise has not ended now.It has just crossed its initial eight years.It is like saying that it is too late to use internet.Bitcoin price is predicted to reach more price in future.
Yeah price of bitcoins will continue to increase in future so its never late to buy bitcoins and no doubt the price is too high at a moment so either you can wait for some more days for the price to go down or if you have a plan to hold your bitcoins too long then you can afford to buy even now as in long term you will only get benefits from it.