These days, FUD is caused by the slightest negative news, and it takes a really big positive news to change the market to a bull-dynamics
Basically everything, however it needs to be in a row. I mean if there is one bad news or one good news that doesn't change too much (depending on how bad the news is). However if you have a ton of bad news in a row or a ton of good news in a row than you may expect some bad changes or good changes according to them. The important part usually is not the news itself its how it makes crypto viewed around the world.
if they really want to hop in to bitcoin they should be ready to lose some money like said invest what you can afford to lose.
When each and every aspects of crypto world ending up in affecting price levels of all leading cryptos, it would be much better only very small amounts. Taking risky beyond our capacity is never recommended. We must invest with a proper plan like converting short term into long term should not be problem at any moment.