First experts are called experts by the people because they give some valuable information. But people should not take them as financial advisors but take their words with a bit of salt. Remember that they are financially backed to support projects and promote projects even if they say they are not. It does not cost them to lie in front of people, obviously. So one should be cautious while listening to them because the actual market making is known to them but they wont reveal all the info.

Long term is always the safer bet. In short term you can ride a pump and exit to make some quick cash as well.