For urban soils, especially right next to houses, can be very poor soil and minimal soil microbes. The trees would be helping to create a microclimate and supporting organisms for the soil.
Cutting the trees resets the succession back to the ground. This happens in nature with fire,
land slides, wind throw and so on. Below ground the
roots of the tree will be decomposed by fungi and nutrients will be added to the soil Getting plants to tap into this reserve will be a good deep organic matter sink.
The key in an urban area is to get the land covered before invasive's take over. I live in an urban area that was covered in low value invasive trees, shrubs and vines and now the better
native edibles came back on their own. Butternut, Black Cherry came back on their own. Maybe 10 butternuts and 15 black cherries.
I am very much do nothing type of person so I just observe what happens and add to the diversity. 100% of my
yard is self-maintaining minus some weeding of invasives or aggressive pioneer species shading my plants too much.