Grasping at straws, Evan? You're the one doing that.
You provided an example that's meaningless because it lacks adequate context and detail. So assessments rose 36% over 3 years, assuming your numbers are accurate. What do we learn from that about the accuracy of the developer's budgeting? Nothing. Absolutely nothing.
Before going all pompous on people about your "professional experience" you should check theirs. You've been in the real estate business for about 7 years now, based on the date when you were first licensed in Illinois.
You may not have been born when I was practicing law in a large firm representing major condo developers. Perhaps you were born during the time I was a real estate developer. I hate to tell you this, but in a number of my projects assessments went down after I turned over control of the project to the HOA â€“ they fired my expensive, vastly knowledgeable union janitor and replaced him with cheap, incompetent laborers, cut the money I spent maintaining landscaping, etc. etc. and set themselves up for assessment increases due to their incompetent stewardship of the property. In your take, those assessment increases would have been the developer's responsibility.
Over a 35-year period I've known many highly professional developers, and the good ones all apply a lot of expertise to honest budgeting. They have professional experience. You have experience.
Optima's been in this business for 30 years and, I'm willing to bet, has a lot more satisfied buyers to its credit than you do.
You really ought to re-consider your anti-developer bias, gain a better grounding in the facts, and take a pass on the wild generalizations.