For me those both situations only make market better for investors to just catch some coins at good prices for trade or just hodl next months.
True but also consider the fact that bitcoin is main source of money for buying an altcoin. If bitcoin price drops then the value of the altcoin drops too. Those who want to buy that altcoin need to be careful at what price they are buying otherwise they will not be able catch when they drop.
It can lead to a price reduction that is not suspected tampa that we realize must be careful in selling it by waiting for prices to rise ,,, can be seen every hour if you want to get a big profit never follow a friend to sell it.
Unless you do a very in depth minute-to-minute analysis its not possible to make cash for every small pump and dump that may happen. Of course if you talk about personal peer-to-peer trading then its a different issue.