Yes. I would consider it unwise to use my own emergency funds to take care of someone else's emergency situation (unless they were a direct family member under which I had already taken financial responsibility), even though reserve funds might be able to be used for that level of problem situation of someone else .. such as a friend or a more distant relative who should already have their own emergency fund practices...
It'll indeed be unwise to use one's emergency funds (meant for his own personal emergencies only) to cover another person's emergency situation, as this coulf compromise and affect one's financial security and stability, except of course they are emergencies of direcr family members which could also be considered to be your own emergency too.
Your emergency should come first, as well as your financial well being, that boundary between your emergency fund and others' financial needs should be maintained and very clear.
It is a personality thing and I will not blame anyone who does that because such might just being doing that with a bid to finding peace within himself or herself. There are people that are so softhearted to the point that they can actually dip hands into their emergency funds to help someone they don't even know but need urgent attention. I have such a person which is my mum, who can inconvenience herself to please others. Her love for humanity knows no limit and because of her I feel some people are just born that way and there nothing that can change them.
Even though this may not be too favorable for an investor still at the building stage, it is what it is. Finding peace...
Messing up your financial plans and putting your plans jeopardy wil definitely not giving you much peace when you use your emergency funds to sort out someone else's emergency and then when your emergency arises, there's nothing more left to sort your emergency, and then you end up dipping into your investment to sort out your emergency, thereby messing up your portfolio and interrupting the growth and performance of your investment.
This is business and all its affairs are meant to be handled strictly without emotions or sentiments, if the person's problem is something your float or reserve funds can handle without giving you much stress then you're free to help em out, but if it's something that'll dry up your reserve funds, then I wouldn't advise you to go through with it because you'll surely need to use your reserve funds too, and if the need arise and there's nothing left for you, it'll still result to messing up your financial plans.
The goal is to have/build a solid financial foundation/plan that'll sustain you throughout your investment journey and not to be all Santa Clause with your finance.