Yea, it is true. I quite agree with you. People are not really excited or motivated anymore to participate in Bitcoin investment due to the negative trend in the greater part of the year.
No, this is not the truth. people did not lose the interest in Bitcoin. Despite the cryptocurrency price fall, millions started to think how to make money on BTC. They are the future investors.
Perhaps people did not lose interest, but many left the market when the price began to plummet