Lightroom Classic hides JPEGs when there is an accompanying RAW file. The majority of photographers - even amateur - import JPEGs alongside the RAW files. This will need to be supported for a lot of people to consider the switch.
Di you try checking "Treat JPEG files next to RAW files as separate photos"? If not, try checking the box. By default, it is disabled. Lightroom -> Preferences -> General -> Treat JPEG files next to RAW files as separate photos
Thanks for the input, Berry. We hesitated on this one, not knowing how people would want to handle the storage. Given that there are limits on cloud storage, would you want the sidecar JPEGs backed up?
The main problem we encountered here is that lightroom cc will offer importing jpeg and raw separately. We'd love if we could just instruct lightroom cc to ignore jpeg files during import if there is raw counterpart.