I'm as baffled about this as @James Hamling, but nowhere near as eloquent.
This phrase particularly threw me for a loop, "The challenging aspect for me is coming to terms with the way an HOA can behave towards an owner so contemptuously without consequence.".
For me the challenging aspect is someone that
1) Disregards the HOA rules
2) Refused to wait on an opening to abide by the HOA rules on rentals, so attempted to circumvent the HOA rules with a bs roommate agreement while living in FL
3) Then sues the HOA for enforcing the rules
This is not at all like forgetting to pay for a slurpee, this is like walking into a 7-Eleven forgetting your wallet, then being upset when told you can not have a slurpee for free, refusing to acknowledge that the clerk said you can't just take it because forgot your wallet, then suing the 7-Eleven when they charge you with theft.
I hope you have great success in life, but your inability to recognize that you are mostly (completely?) at fault here is going to hinder your success going forward.
Lessons I would take from this: Don't buy into an HOA. Don't break HOA rules. Don't fight the HOA once I've broken the rules.
I really do wish you the best, but am completely baffled why you think the HOA is at fault here.
Like James said, look at this from the HOA point of view. How would you feel if your tenant decided they wanted to foster monkeys and the lease forbids pets. You find out that they are breaking the rules of no pets, so inform them that this is against the lease and note that the monkeys are creating a mess/damaging the property. The tenant gets defensive and says they didn't see a "no monkeys" clause in the lease and that you have no right to tell them what they can do in the property and that technically the monkeys "aren't pets" and sue you for wanting to enforce the lease.