I agree with you 100%. If the intention is to hold long term and don't care about the price, ATH is not a big deal. But for someone entering the crypto market just now, it may not be good to buy at ATH and then see it going down. They might have to wait for another year or two to see it coming back then their bought price.
I would rather say that this is a moving train with breaks but never with a never ending path ahead. Even if it slows down it will keep going forward. Sometimes the breaks work and sometimes it doesn't.