I think the reason why some inexperienced investors focus only on investment goals while disregarding emergency fund is because of their eagerness in quick gains. The excitement of chasing high returns can make saving for unexpected situations unnecessary. Success stories portrayed on social media also plays a role making investing to be appealing while having an emergency funds are rarely discussed. New investors think that their portfolio will always be at profit not considering the risks of market volatility or personal emergencies.
Sometimes it may not really be greed or easy want for profits, it is actually ignorance and the carelessness of downplaying the importance of emergency funds when it comes to their bitcoin accumulation journey, some people come to appreciate the importance of emergency fund after they have hit a real emergency and had to tamper with their portfolio for survival and get back to square one of their accumulation journey and possibly learned the hard way.
Some newbies misplaces priorities and tend to focus solely on accumulating bitcoin and are excited with how fat their portfolio is getting within a short while and neglect building emergency funds simultaneously. Reality hits them as emergencies occurs and they understand their mistakes and learn from it immediately by building backup funds. Some people refuse to learn the right thing until they have experienced the repercussion first hand but I think that those that learn correctly and started building their backup funds alongside their accumulating bitcoin would come to appreciate their right decision more when real emergencies hit them compared to those that failed to build it who would experience regrets of having to consume their portfolio for survival and suffer possible setbacks in their bitcoin accumulation journey.