Every crystal world is in fact currently congested, yes. Furthermore, every single house this cycle from Balmung (Lowest number of bids on open private owner plot currently: 23) to Coeurl (Lowest number of bids on open private owner plot currently: 3) has a minimum 3 bids on every small plot.

Balmung and Mateus (18 bids on lowest) have literally hundreds of players who have never owned a house who cannot get one. And anyone saying move to Dynamis should try themselves. The queues are awful, the economy is terrible outside of Seraph, and everyone just ends up DC traveling back to Aether or Crystal anyway. I see more Dynamis people on Balmung sometimes than actual native residents.