A3L shows a limit of ~ 3200 or 309 (this is what is shown on the launcher) subscribed mods in the launcher from Steam.
If a user has more than these many subscribed mods, the balance above 3200 might not be shown.
Also, if new mods after the 3200 limit are still being ADDED, the oldest subscribed mods disappearance from the launcher, First Subscribed First Removed, yet the STEAM WORKSHOP MOD FOLDER still keeps the original contents.
A3L maintains the 3200 mod limit to be shown.
Lastly ALL steam subscribed mods, over 3200 and not hidden or removed from the workshop, will still be updated locally on the user PC even if the launcher show it or not.