Tathra Khaeus said:
Mostly because 2yrs isn't nearly long enough for everything to have happened within.
To be fair, that kind of applies...to all previous timeline updates as well.
The rise and fall of the Sith Empire (the original faction with that name), the Galactic Republic, the Omega Protectorate, the CIS (first incarnation), the Lords of the Fringe, the One Sith, the Mandalorian Clans (and the various successor groups that preceded ME), big conflicts such as the One Sith War, the First GA-FO War etc. all happened within less than twenty years.
Not to mention the various galactic events, such as Clockwork (AI tries to take over and murder all organics, temporarily occupying the capitals of various galactic powers), Dark Harvest (zombie apocalypse), Netherworld (we all go to hell - well, most of us, and the Force is wonky), Omega War (Rogue Sith try to go all Operation Cinder) and Incursion (ok, we spent most of our time pushing buttons).
Is this realistic? Nope. Quite a few of these events could have caused a large-scale collapse. However, it's been a thing for a while, so I'm not fussed about it. The board timeline's not mandatory, so I just follow my own.