Can college students trade cryptocurrencies?

Today, an internet user went to apply for a job as an Ele.me delivery driver and was immediately rejected by HR.
The leader's exact words:
The most unreliable are you bunch of crypto traders.
You come to apply every now and then, submit multiple applications, but in the end, very few actually show up for work.
When they first start, it's intense—running nonstop for 24 hours, earning some money, then immediately quitting to go all-in. The reason for quitting is always the same: "Bull run, quick return, the market has entered."
But after a few days, another group of people comes back to apply en masse.
In contrast, delivery drivers from the A-shares market are very reliable—working steadily for years, with a very stable job.
HR summary:
Crypto traders come for part-time work, stock traders come to work full-time.
When the crypto market calls a bull run, half of the delivery drivers disappear.