No, it's not, it's just a rumor. You only can get below 10% of your investment. Just try to do short-term trading with bitcoin. You will feel it your own it's big but not big enough. If you investing with a lot of amounts bigger profit you will get.
In 2017 bitcoin has increased dramatically and helped wise investors become millionaires within a year and what they needed to do was just buy bitcoin and keep it within a year. The current investment in bitcoin and crypto is a global trend and therefore it will certainly grow strongly in the near future. I believe this.
The profit that bitcoin brings to the investor is enormous. If you invest in bitcoin from the beginning of 2017, until now your property has multiplied by 100 times. This is the dream profit of all investors in the world and bitcoin has done this, bitcoin and crypto market is truly a dream investment channel in this time and in the future.