Wrong. Pumps have been related many times to political or actuality events.
There are tons of pumps in the altcoin world every year and people make a lot of $ on this.

You have 3 ways to make profit in cryptocurrencies,

1 holding long term
2 daytrading
3 riding pumps

Playing casino doesn't count as it's too lame

Literally all altcoins can be pumped, just select the right horse, it will give you big profit