It’s plausible that city could be grown in space as a vacuum is a good environment for spores and their makeup benefits greatly for space itself. Although it’s an enclosed system they have randomly grown in the iss before. If they can fruit then there’s mycelium and that’s what’s been used as a building material on earth already.

I read an article years ago about how they could colonize star systems in xx amount of years.

Here’s what I found w a quick google search on the subject

https://www.zamnesia.com/blog-the-mushroom-our-extraterrestrial-friend-from-outer-space-n653

It’s like 1 extra step to go from cakes to bulk. It was easier for me at least as I went straight to bulk when I farmed. When I wrote sporelate I was kinda implying the natural way when a fruit opens and they drop. Having to swab them isn’t really dropping spores imho. Plus if you’re already using agar you’d be better just taking a piece of fruit body vs a spore to stick w better genetics vs the unknown.

I could be wrong as it’s going back a few years but the pe syringes I used had chunks of fruits floating in them whereas other cube subspecies would have globs of spores.

Pe don’t sporelate and can only inoculate from the fruit.

Also fwiw to these comments; it’s WAY easier to grow in bulk than small amounts and pounds can be harvested for under 20$ in materials once you’re up and running