Those who don't have money, have all the time to keep learning and reading stuff online about Bitcoin and the crypto space, they have no reason to be in any hurry and it seems they are the ones that avoid the unnecessary dramas in the crypto space because they took their time to learn first.
Do not walk away from Bitcoin investment because you don't have the money, it's even better not to have money because you will have the patience to learn more about everything, and when the money comes, you will be able to avoid many dramas.
I think he's pointing that if you don't have the funds yet to invest literally in Bitcoin why not invest to yourself first? Like gain some knowledge first and study some techniques where you can search up online since were in the era of the internet. Because let's be honest some newbie would impulsively invest even not knowing the basic knowledge about in this industry so they would jump into conclusions. But still if you don't invest in the real thing to Bitcoin, you wouldn't even assess if your knowledge you've been studied are have been applied. Knowledge and experience should be together for you to easily manage your funds in crypto.