You seem to be wanting to plug ideas about general investment timelines into a specific investment (namely bitcoin in this case).   Just because someone from Forbes frames the concept of short term and medium term investments as if they were meaningful categories does not cause them to either be meaningful categories or specifically applicable to bitcoin.

I largely already described the 4-year cycle idea in regards to how any of us should be thinking about bitcoin, and frequently I also refer to the special paradigm-shifting contribution coming from bitcoin in which we are able to transfer (and store) value and information in self-sovereign kinds of ways..  yeah, it is not completely fool-proof, yet bitcoin is still bringing new kinds of possibilities and sound-money attributes to normies and also to institutions and governments.  We don't see the world transformed right away, yet we should still be attempting to appreciate bitcoin for what it is and understanding that if we invest into bitcoin, we should be attempting to at least invest for a whole cycle, if possible.

If we are not able to invest at least a  whole bitcoin cycle, then at least we should recognize and appreciate that bitcoin  is very volatile and prices could go up or down during such shorter time-frame, and it seems way more appropriate and accurate to be describing those shorter than 4-year timelines as trades (and maybe gambles) rather than investing.

You can think of the matter however, you like and you can let unclear thinking garble your way of thinking about investing into bitcoin and consider that you are investing into bitcoin when you are actually trading.  That is your choice to call what you are doing whatever you want, even if less than 4-year timelines seem to me to be way more like trading and/or trying to play a wave rather than investing.

Yeah, I understand that there could be some people who get into bitcoin, and they anticipate that they are going to be able to stay invested for more than 4 years, yet sometimes unexpected things happen in life, and so they may end up having to break from their BTC investment earlier than expected.  We should be trying to plan our investment so that we are not going to end up in any kind of a situation in which we might have to sell in less than 4 years, even though surely there could actually be circumstances that are beyond our own expectations that end up taking place in less than 4 years time.. yet if we already know that we are not able to invest into bitcoin for at least 4 years, either we might not want to buy into bitcoin or at least we might be able to attempt to be realistic with ourselves and to recognize and appreciate that we are engaged in a trading and/or gambling process rather than an investment process.

Another thing.  You can believe in short and/or medium term investing all that you like; however, those sound like attempts of traders to convolute ideas by describing the taking of trading positions as if they are investments. Surely there are exceptions to every idea and there could be some traders who are treating their trading capital as if it were an investment, yet from my point of view that sounds overly confusing and maybe even purposefully trying to lure folks who are trading into considering their practices as if they were investing, rather than being either trading and/or gambling.