If it were me, I would even advise newbies to stay away from trading, especially futures trading, and becoming an investor would be more suitable for them.
Advicing a newbie to invest into bitcoin is also risky especially if he doesn't know yet how crypto market moves. We know that there are 2 phases of market cycle, the bear and bull market. If he buys at the wrong time, he could be holding it for a long time or worse sell it for a loss if something unpredicted happens along the way.
A newbie could also go all-in buying at one price which is not suggested as we all know bitcoin is very volatile. He should know what is DCA strategy before investing to manage the risk of losing his money.
Suggesting a newbie to invest and stay away from trading is a good recommendation especially if he doesn't have good skill. He will just waste his money than make a profit. A newbie can go all-in buying at one price without think of what may happen later.
He will not accept if the price still down and will cut loss and wait for another time to buy back at a low price. Besides that, a newbie can lose his control in panic if the market drops deeper. Many things need to learn by a newbie so they will not make a fatal mistake in trading or investment.