In any case, performance is just one factor. For a FOSS project to be successful long term it needs contributions from other developers and with the massive pool of Python developers there are, hopefully I’ll be getting some help soon. Also along those lines I have deliberately chosen:

to code as simply and stupidly as possible, to make it accessible to most skill levels.
No complicated frameworks, fancy algorithms, or esoteric design patterns. Model View Controller, baby.
No frontend build process or tool chain (vanilla JS only. No npm).
Few third party dependencies, only Redis and Postgresql. Mostly.

All this makes setting up an initial development environment, finding the bit you want to change and testing it out fairly quick and easy.

Sounds very wise to make it as accessible as possible. And you basically get super maintainable code as a side product!