I understand your frustration but I expect there are a lot of things that go into that decision. I expect adding a fee to parking makes it possible to enforce time limits, to remove squatting, and to ensure there are actually spots available. I doubt it is for the money but even if it is the park systems tend to be horribly underfunded (and often have to be held up with private donation money). A lot of our broken things are because someone with too many responsibilities and too little resources has to make a choice between a bunch of bad options and I wonder if this is similar.
From your rant we know you'll pick free open spots compared to paid open spots but what if the choice is between paid open spots and no spots at all? Or worse, paid open spots or shady looking cars parked all day selling drugs?
It seems like the more effective change is more parks but imagine the pushback if someone tried suggesting that! You're angry that you already pay taxes and now you have to pay again to have a special spot right at the park you can park your car in. Imagine the backlash if someone had the audacity to suggest raising your taxes for new parks. "I already pay for parks! I won't even use 95% of them! Why should I have to pay just because I'm a homeowner!"
I can hear my dads voice saying some of these things and it reminds me of his complaints about funding schools with property taxes and I see how people like him pivot this into "the socialists just trying to punish the straight white men".
It all makes me sad.