As long as they don't invest more than they could afford to lose the risk is minimal. Even if they do, they don't lose anything unless they panic sell their stash.

Those who took loans to buy crypto however (which is as dangerous as investing too much, probably even more dangerous) will get fucked so bad.

That applies to  all the investment decisions actually.

In the end we all are here for the money in some way. If anybody tells you that he is here for the tech, he is lying.

We know the tech behind btc is good, That's why we expect big returns for investing in it and I see nothing wrong with it.