This is the reason why a lot of people jump into bitcoin investment and think that it's a get rich quick scheme and run at loss because they fail to learn the basic knowledge of bitcoin and understand how they can plan on investing and hodli for a long-term.
Most people that don’t have proper knowledge about bitcoin do see bitcoin as a Ponzi scheme, and that’s why most people do end up jumping into it, they believe they can easily make quick money from bitcoin investment, but things doesn’t work like that, if you jump into bitcoin investment, then you going to end up regretting at the end because you definitely going to lose. People that claim they having signal groups are the set of people that makes bitcoin investment looks like a Ponzi scheme, they are ready to say anything just for people to join their group.
If you are investing in bitcoin, then you shouldn’t be having the mindset to make profit within a short period of time, your intention is to hold for long term, and if you are holding, then you should learn the appropriate way to hold your bitcoin so that you won’t end up losing your bitcoin after holding for years.