You've been very lucky, I guess. Once you're inside the airport, things are generally fine, notwithstanding some of the things already mentioned regarding the way TSA handles pre-check and CLEAR that you don't see at any other decent airport. It's the dumbasses who wildly overbook flights well beyond the capacity of our system that are the problem (hint - it's operated by the city). Arrivals and Departure lanes are some of the most fucked up bits of civil engineering I've ever seen, as are the parking lots/garages and ride-share setups. It's a complete clusterfuck getting in and out of there by vehicle. Baggage claim, for those crazy enough to check a bag, is completely fucked as well, often with five different giant flights all being piled onto a single baggage claim, where everyone ends up waiting twice as long for their bags compared to seemingly every airport on earth, including those in central and south America. When the people making decisions on capacity are the same folks concerned about driving tourist dollars to town, you're going to get some seriously fucked up managerial decisions. The folks abandoning rental cars for miles along the highway during SXSW is a prime example of this type of mismanagement. The same issue is what led to the near runway crash a few years back. We fly way too many planes in and out each day for the size of airport and surrounding infrastructure we have. The worst part of the airport, in my opinion, is the arrivals lane. At most times of day you will sit your ass in the most convoluted and long ass line for no good reason other than what I assume is aggie engineering combined with Austin local government planning, even when the airport isn't particularly busy. There are ways around it, but the fact it's an issue in the first place is pathetic. It's a completely dysfunctional mess.
Our airport is relatively attractive on the inside, and I appreciate the use of local art and businesses. But that's about the only thing they've done right. It's not dissimilar from our city government's decisions to spend money on bike lanes and local art installations instead of basic infrastructure. So the airport at least matches the city in this regard, I guess.
Here's a list of airports owned and operated by municipalities in the U.S. Some are better than others, but the difference is rather stark, IMO, when compared to airports owned and operated by an airport authority model (where an independent, i.e. private, body manages the airport on behalf of the municipality). With these airports, you're at the mercy of how good the city management is, so it varies wildly.
Municipal (City/County) Government Department
ABQ -- Albuquerque International Sunport
ATL -- Hartsfield-Jackson Atlanta International Airport
AUS -- Austin-Bergstrom International Airport
CLE -- Cleveland-Hopkins International Airport
CLT -- Charlotte Douglas International Airport
DEN -- Denver International Airport
IAH -- George Bush Intercontinental Airport
LAS -- Las Vegas McCarran International Airport
LAX -- Los Angeles International Airport
(LAWA)L45 — Bakersfield Municpal Airport (L45)
OMA -- Eppley Airfield
ONT -- Los Angeles/Ontario International Airport (LAWA)
MCI -- Kansas City International Airport
MDW -- Chicago Midway International Airport (CDA)
MIA -- Miami International Airport (MDAD)
MSY -- Louis Armstrong New Orleans International Airport
OAK -- Oakland International Airport
ORD -- Chicago O'Hare International Airport (CDA)
PHL -- Philadelphia International Airport
PHX -- Phoenix Sky Harbor International Airport
SFO -- San Francisco International Airport
SJC -- Norman Y. Mineta San José International Airport
SLC -- Salt Lake City International Airport
SMF -- Sacramento International Airport
STL -- Lambert-St. Louis International Airport