With how much damage the Conclave did, I wouldn't be surprised if most of Tal'Dorei is still rebuilding.
Well how long as passed between Season 1 and Season 2? I was under the impression a good 25 years had passed, which is a massive amount of time to repair the city, get their infrastructue up and running and heal most of the wounds on the population. And thats just going by real world medieval metrics, let alone a world filled with as much Magic and power that Exandria has since a few well placed druids and mages could bulldoze the city, clear the wreckage and rebuild it from scratch in the matter of a month if they needed to and Tal'Dorei had a-lot of high powered mages working for the public. Vox Machina could have done it themselves, or really just Scanlan if he wished hard enough :P
Plus, they were doing pretty well last we checked in before the Vecna arc.The damage was cleared and it was mostly just the people they lost.