Of course this really counts, somehow that matters in a huge difference for small time investors because having 100k capital investment was too big for an average trader. Only whales can have that huge amount of money, and I think traditional business owners who saves money still in doubt of trusting the security of their asset at crypto exchanges. Looking back at history, crypto market exchanges is likely to collapse once whales pulled out their asset in an unexpected situations. I just won't give details on everything, you just google it if you want.
When we want to buy bitcoin, we don't have to buy it at a price of $100k. We can buy with a minimum amount of $100 but we also have to understand that the profits we get when using very large capital and small capital will be very different. The more capital we use, the higher the profit we can get from the trading we do.
And $100 is still high for someone who are unfortunate. I think there is no minimum amount in buying a BTC, although some exchanges and wallets with built-in exchanges can set it. I still believe that many of them has a minimum lower than $100. We only need to keep on looking if in case we end up on an expensive platform.
Investing is obviously risky, so we must not think about the profits at all times but we must also think about the losses that we can get once we are not successful with our attempts. This is why it's also better to use only a small capital and this does not mean that you can not grow it into a big one. You still can do it slowly but surely.