Everyone has the right to speculate what the outcome of the market would be even though their can't be an accurate speculation at any given time due to how volatile Bitcoin is but truth be told I support your statement cause some people make it seem like they can predict the future of Bitcoin with an accurate speculation of what the price would be at a point in time.
Bitcoin is not something that should be sold when it gets to an ATH, especially if the holder have not held it for over four years or more, so it's suprising when I see people rejoicing about a possible ATH when they don't fall under the category of people who's held for over four years.
I think speculation is part of the system, we can't actually do without speculation in this space but the outcome or the exact price we will be arriving at isn't what we can be certain about, yea volatility makes it very difficult for us not to get the accurate price prediction at anytime, not we our price prediction or speculation can be close to the actual figure with some fractions but not actually the exact price.
Is so much support your statement about Bitcoin not being an asset to be sold at it ATH when it's holders has not gotten a good amount of Bitcoin or have not been a long-term holder, buddy anyone you see being happy because of the perceived ATH that has not gotten a bulky portfolio, just know that such person is just here for immediate profit as such he or she isn't a long-term investor, there's a possibility that such person is a trader although that should also be a personal decision if thats what such individuals want for themselves.