Point of entry matters if you have a fixed amount and want to maximise your number of shares. I'd rather have 1000 at $450 than 750 at $600. Down the track that could be over $1M in additional wealth generation. The recent volatility makes a lower entry possible but the relative lows will keep rising as the news keeps improving.
I prefer Ark’s model - no reason to simply buy and hold with 100% equity and no reason to sell 100% on a downturn.
Instead, take profit with some when can and re-buy when discounts arrive.
Then I sling options and buy Tesla products with the profits.