There are a few new warnings:

/home/runner/work/python-can/python-can/doc/interfaces/udp_multicast.rst:18: WARNING: undefined label: 'other_virtual_interfaces'
/home/runner/work/python-can/python-can/can/interfaces/udp_multicast/bus.py:docstring of can.interfaces.udp_multicast.bus.UdpMulticastBus:18: WARNING: undefined label: 'other_virtual_interfaces'
/home/runner/work/python-can/python-can/can/interfaces/virtual.py:docstring of can.interfaces.virtual.VirtualBus:12: WARNING: undefined label: 'other_virtual_interfaces'
/home/runner/work/python-can/python-can/can/io/logger.py:docstring of can.io.logger.Logger:4: WARNING: py:class reference target not found: can.TRCWriter

While you're at it, could you take a look at this? This should fix the readthedocs PR integration

What do you think about moving these into separate files? So they just appear in the table of contents like Bus, Message etc...

The docs look much more well rounded now, i like these changes a lot.

Something that i'm still not super happy about is this:

The BusABC class, as the name suggests, provides an abstraction of a CAN bus. The bus provides a wrapper around a physical or virtual CAN Bus. An interface specific instance of the BusABC is created by the Bus class, for example:

Talking about abstract base classes isn't a great intro for beginners imo. This is probably the first paragraph that a new user will look at.