Most of the speculators before and even now are saying that if Bitcoin goes up, then altcoins goes up as well and good projects perform well. How true are these speculations if there are different technologies or plans for each cryptocurrency?
I think you should know that there are investors who choose long-term and short-term investments.
For long-term, and their difference is, they believe in the technology and products of the project and this will have potential in the future, they don't care about speculation.
For short-term, as you said,
Most of the speculators when the price of bitcoin goes up, altcoin will also go up, They will follow the trend that is happening It depends on the ongoing project and the particular community. IMO
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And the fact that bitcoin is not even the first cryptocurrency.
Then what facts make you think like this?
please give me information, what is the first cryptocurrency?