Yes and I understand, my point is that savings and investment aren't really qualitatively different activities. Savings are investment in money, and 'Investment' is investment in non-money goods.
But there is a qualitative difference! Storing excess capital into money is "saving". Using this saved capital to buy a car for private use, or videogames, is consumption. Using the money to produce more capital, like buying a machine for work, or even "buying" a degree at a university, is investment. The transformation of money into another store of value or physical thing is is not automatically investment, and the economic results are different.
The fundamental idea is that if you store your money under the mattress then this is equivalent of investing in the most diversified index fund out there, you invest in EVERY business and CEO out there who operates in the USD economy.
This generally is a bad idea because the Federal Reserve produces more money which results in reduced returns, BUT, this effect is really visible in fixed money supply economies such as Bitcoin. By hodling bitcoin you invest in every bitcoin business out there (including the scams) because by not competing with other investors for the same resources, you allow them to operate at a bigger scale.