It's inarguable that BTC value has grown immensely overtime and it's one reason to keep accumulating BTC as you can. Apple has just unveiled iPhone 15 which is estimated to cost about 0.031 BTC with the current price. Comparing the price of previous iPhone to bitcoin, you'll see the important of investing in bitcoin than buying assets that depreciate in value overtime. Of course, the risk of investing in bitcoin can not be overlooked just like any other investment but the bitcoin risk is worth taking.
This image below was taking from
Coingecko comparing BTC needed to buy iPhone over the years.
Imagine holding the BTC that you used to buy iPhone 4s till the present day and see the number of iPhone 15 you can acquire with it. If you have not started investing in bitcoin, this is the right time to start.
There is no denying that Bitcoin is a good investment option and many people who have invested in Bitcoin have made good profits. For those who invested in Bitcoin at the beginning of its existence, you and I cannot even imagine how much profit they must have made. Of course, those with capital should keep buying Bitcoin, and now is the best time to invest, as the current price of Bitcoin has fallen.
The chart you provided comparing the first iPhone and the current iPhone with Bitcoin clearly shows that Bitcoin is a much better investment than any other investment. Wherever we invest there is a risk of loss as well as profit. All types of investment have risks but in my opinion Bitcoin investment is the most reliable and safe. The current price may seem high to some, but the value of Bitcoin is always going up, and anyone who has capital should invest in Bitcoin, and hold it for a long time. Its value is always increasing, because everything is clearly visible in your given graph, and there is no room for doubt.