Almost everyone is wrong, and only because; Bitcoin is not at all about all the deep dips but the stabile growth with the high peaks. That's it and that's all of what most of them just don't get.
You won’t say anyone is wrong, when it comes to BTC lately the best you can do is to DCA and follow up the market till the bull run comes if not you will either buy too high or miss out totally. There exchanges that helps you achieve this through their automated bot just like smart portfolio bot on Bitget exchange.