Yep. That is a good point. We can ONLY start from where we are at, and frequently, I will say to people to get the fuck started, but frequently, people have troubles just organizing their finances enough and in such a way that they know how much they are able to invest, whether that might be 10% of their income or some other amount that better suits their situation... but hopefully they can get it to some level of minimum aggressiveness, such as 10%.. otherwise it becomes harder to make progress since we already know that investing 10% takes around 10 years just to get to 1 year's income invested. and hopefully that amount (and its interest/yield) is at least keeping up with cost of living increases (inflation of prices - deflation of the currency.. hard to get ahead, for sure).
Yeah sure, always waiting to accumulating enough capital to start investment is sometimes very unwise because the more you think you're saving that's the more expenses are coming and before one realized it has taking years but still not enough capital to start with so is actually good to start with something even as little at least by investing bit by bit before you realize you have gone far also there are people that started the same way and now they have gone far.
Being able to accumulate sufficient capital is an important issue, but it is very difficult to determine where we will stand during this accumulation. Therefore, it may be a better move to make savings by investing. When we don't invest, we can spend the money we save on different things. Sometimes we buy things that we can't control ourselves and don't need, this delays our investment.
It makes sense to me to act with the understanding that the best savings is investing.