> I hope they start showing up everywhere.

For people in urban hellscapes? Yes.

For non-human animals? More complicated. These sorts for forests are generally dominated by “edge species”. Edge species generally do relatively well out of habitat fragmentation.

The most sensitive species that need a lot of depth in forest generally don’t do well with these small pockets.

This is not to say that Miyawaki forests aren’t an improvement, just that their “conservation” value is limited and still need to preserve/manage huge amounts of actual contiguous forest with a minimum perimeter compared to the area covered.