There is no need to determine which investor is matured or not because long term investor will always hold regardless of the market uptrend because there is more to holding for long term than taking a small profit because of the slight change in the market. Short term investor will definitely sell in this period because that is what they have be waiting and praying for but for those short term investors that hasn't sell yet, I will advise them to hold and continue buying instead of selling now because of..., what we stand to gain as a long term investor will/is incomparable to what we are seeing now so we should take decision carefully and wisely as this will help us.
Your suggestion is clearly correct. Rather than selling now just because we've seen a small profit from Bitcoin's price increase, I also believe it would be much better for investors to hold long-term, as Michael J. Saylor did. He frequently buys Bitcoin without selling, especially for the short term. He's now made significant profits, but he's still holding Bitcoin as usual and continuing to buy more to increase his holdings for himself. So, this kind of thing is something that is very worthy for us to emulate if we also want to be long-term investors in Bitcoin who are not immediately tempted by small profits in the short term from the effects of price increases in the market.