If I get you right, what you are saying is that as we are building our emergency funds, we can also invest with it since we are not using it, so that it can build and increase our Bitcoin accumulation very fast? Sincerely bro, this a wrong approach to the Bitcoin investment and it's a NO for me. Don't forget that the main reason for building up your emergency funds is to help you stay long and stronger in your accumulation period..your emergency funds helps you to be able to buy Bitcoin and Hodl for a long term because, surely life will throw it's weights and challenges on you, and when this happens, it is your emergency funds that you use to survive and settle all this unplanned situations..
Tampering an emergency funds for something that is not an emergency is wrong. Just as the name implies "EMERGENCY". It is meant to cover up expenses that may arise due to unexpectedly in the future. And yeah, as long as we we have an emergency fund it will save us from tampering our portfolio when those needs arises.
I understand most investors try to be aggressive. However, if they want to be aggressive more into accumulation, it is better if they go get another high paying job, or work extra time, in fact anything that can earn them extra income so that their discretionary income will he large. Using funds kept for emergencies shouldn't be an option IMO.