Did a bit of reading up and it seems MS are using this to push everyone to using SPFx, which I did have a play about with but it seems horrendously complicated (at least for me right now while keeping up with everything else). As far as I can tell, you can wrap whatever JS you want in an SPFx WP, so an idea occurred to me...
Would it be feasible to create a basic WP in SPFx with no real configuration or WP properties, and just use this as a template to insert whatever custom JS I need to run? If so, what's the best way to go about this?
Basically looking for a 'as little config as possible' way of getting JS onto Modern pages; the sooner we get used to this the better as I feel there's going to be a lot of clients within the next while needing their Classic pages updated when MS eventually ditch Classic.