It looks like there are some old feature requests related to track history/Last.fm scrobbling for internet radio stations:
- 2018: Scrobble Internet Radio Tracks - #5 by Robert_Sink
- 2016: The ability to create playlist from Internet radio streams - #3 by yyzSB
Also relevant:
It appears that at least for the di.fm station I have on now, Roon is able to see some metadata:
The link to that album does take me to the correct album in Tidal.
If the stream contains enough metadata for Roon to link to the album, could the track be included in the Roon history and scrobbled to Last.fm?