If bitcoin can get to $250k by December, then buying now in view of getting returns by the end of the year isn't a bad investment plan. Is such a plan a good one or a red flag?
Anything could happen, but I would never advise someone to invest with that approach. Unless you are someone who really knows and understands how to profit from Bitcoin investments, you might think like that and do it. Of course, with the risks you take on yourself.
Creating that mindset will foster an understanding among new investors that Bitcoin is an asset that can generate profits in a short time. It might happen, but there are other possibilities that may not be known.