Manipulation is of course everywhere. All you have to do is look at banks being fined for this activity to know it’s a common occurrence. I think this sort of market manipulation is probably present in every aspect of pricing in society. It’s what people do when it comes to money and especially in finance, is not surprising.
Market manipulation affects us more if we are trading but less affects us if we hold our bitcoins.
Price can have big changes on market in a day, a week or a month but after one year, Bitcoin has good price growth that can help us to gain profit. If we don't trade, you can avoid manipulation effects.
Yearly candles with 15 year candles, only has 3 red year candles.