There is one more thing that I always say. Let's say you can "save" 300 dollars a month, there is nothing wrong with taking out a loan that has 300 dollars payments monthly as well. Sure there could be the fact that if something wrong happens and you need money urgently that would be sad but I am sure it will be difficult anyway, whereas if you can take out a loan that you can pay easily no matter what, I suggest doing that anything you can.
I like taking out 1-2k loans for example, that way I pay about 100 bucks a month and be done with it in just few months and I just use that money to invest into things whenever I want instead of waiting for months. Of course do not withdraw loans that you will have hard time paying, I never take out a loan that I would need the investments to pay, I rather pay my loans with my salary and just grow my investments in size.
Those people do not make any sense at all, I have a friend who took 60k for 3 years and he would literally pay half of his salary just to loan for 3 years, that was his deal with the bank and if he had to, he would definitely crash and would fail because he had other costs as well for living which is why paying half of your salary to bank for 3 years made zero sense to me. He was thankfully lucky and bitcoin prices went up a lot and he paid most of it already, so he is lucky but I would say what he did was one of the stupidest things I have seen in economics, that was basically forcing yourself to poverty if he was unlucky.
In any case I do like smaller loans, tiny loans, they may not look much but if you do that 4-5 times and then get lucky with a big run like what happened in the last year, you could actually end up with a very decent portfolio.