If you could force users to use an app like Reddit does you could get device data. Though short of that not really. Browser fingerprinting and tracking cookie placement (What Reddit uses in their web session) is described that way by lay people (and people trying to fear monger or dissuade ban evasion) but Browsers like Tor or Mullvad defeat that very easily by not saving the data and randomizing the fingerprinting data.

Most Lemmy users wouldn’t use a locked down black box app similar to the Reddit app though. It would be a red flag for many of them. An instance which requires that would not be popular.