Q.Dying Aloe Leaf
This happened to an older leaf before, so I’m not too worried. My main question is: should I remove the leaf now so the plant can give it’s energy elsewhere, or should I let the leaf dry up completely so as to not open a wound on a dying leaf. The LAST thing I’d want is fo hurt this aloe plant! I’ve had her for about 6 years now!

Certified GKH Gardening Expert
Neem oil has very specific use instructions. If you don't use it completely properly, it will kill your plant. I don't recommend it, but if you know what you are doing with it then it can be a good option. It all comes down to how familiar you are with using this oil properly.

Certified GKH Gardening Expert
This is an overwatering issue. The damage starts at the base, and works its way to the tip. This will need to be addressed with a fungicide, as it will not go away on its own. It may subside, temporarily, but without treatment it will always come back at some point.
Make sure to let aloe dry out, thoroughly. It will not tolerate wet soils, and will survive very dry conditions for a very long time, when not diseased.
You can cut off the affected leaves to avoid spreading the disease, but you will need to treat with a fungicide as well. This article will help:
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
https://www.gardeningknowhow.com/houseplants/aloe-vera/aloe-vera-plant-care.htm

Would using this product help? It is listed as a fungicide and insecticide. I do have fungus gnats, too.

Alright! I’m looking into fungicide advice ASAP! You said to remove the affected leaf, but how do I do so safely so as to not damage the plant or open a wound that may cause further issues?