Nowadays, there are still many people who only depend on 1 income, this is a big risk. i once met an active trader who i thought his income was 100% from trading but i was wrong, he made money from bonds and also dividends from the gold he saved and the results of trading if he made a big profit then he would use the money to increase his investment capital in bonds and gold, i admit that this person is really extraordinary in managing money, he maintains the liquidity of his money well and people like this are very rare. So trading as a job is actually not a wrong view, it depends on how you look at it.
In a volatile space like trading - you always should be ready for uncertainties to poke you when they would harm you the most.
So no wonder the trader you met or spoke with is not putting everything on trading only: he knows his businesses and he sure won't be caught red-handed in it.
That's wonderful for him and for us to know.