I don't know if people still hold that view, but now is as good a time to get in, if you have the funds to. There's always DCA.
Many who have invested and held Bitcoin may be feeling a little uneasy at the moment, especially those who invested at high prices due to the market decline, and their holdings are currently at a loss. If they want to invest at a current price, i.e. using the DCA method, then investing at the right time right now and investing at the average price will definitely result in a much higher profit if the market corrects later. Again, for those who have not invested at all, it is the right time to invest, and if you have enough dollars, then keep investing.
Even if someone started buying bitcoin at $109k in January, there is no reason to stop buying and to continue to buy for 4 years or longer and then to reassess. Sure, if someone started out by front-loading his investment into bitcoin at $109k, then it would take longer for the smaller ongoing buys to bring down the average cost per BTC. Building a long term investment takes time, even when there is front loading of the investment, and surely sometimes there can be concerns when there might be extended periods of time in which an investment is in the negative.. yet if there is conviction about the investment, ongoing buying can continue to take place, with a sizing of the investment in accordance with tolerance and/or conviction.
The bitcoin investment is not guaranteed to be profitable down the road, whether we are talking about 4-10 years or longer, yet guys still ongoingly invest into bitcoin because they consider it to be amongst the best, if not the best of asymmetric bets to the upside that is currently available across the planet and to everyone/anyone.