Does it mean that now is the moment to enter long-term positions? To buy and hold for several years till 2024-2025?
Yes, including. Suitable for long term investment. If you have a speculative strategy, then you can hold until the next bull to try to sell at the highest possible price, this will be a kind of long-term trading.
And what price will be the new ATH in your opinion? For example, the previous one was near 70000 (in 2021), the one before previous was around 20000 (2017). This is a 3.5 times growth. Can we then expand 245000 in 2-3 years?
I would not try on past multiplications for the next ATH, due to the fact that the higher the capitalization, the more difficult it is for her to make the cherished x's.