The project is an open source project, so it's likely not your fault :) I can fully see how and why this might have grown historically in ye olden days of pyth

The project is an open source project, so it's likely not your fault :) I can fully see how and why this might have grown historically in ye olden days of python2, but it's not sustainable to continue adding floors ontop of a rotten foundation. Code needs maintenance like anything else, and far too often there's no budget or time available for it. Even if that maintenance would reduce the overall workload.