it was a bubble when it was 20 thousand $ ,but now it's increasing price is real and belief to btc is more than two months ago
It was a bubble when bitcoin reached that price but many make the mistake of thinking that all of the growth was a bubble and that is simply not true that is why bitcoin right now is still trading above 10k which means that while some of the growth was in fact caused by a bubble created by new users investing in bitcoin there was a also a lot of real growth in the previous year.