And I don't really know where you get your impression that The Gardiner is the only infrastructure in the city but OK, I can play that game too. I get my information from the audits of the city budget that stated a goodly chunk of the 'budgetary surpluses', that Miller crowed about for years, was unspent budget toward repairs on The Gardiner. This was rather widely reported, too, so I'm surprised that you either didn't know about that, or chose to ignore it. The concrete didn't suddenly start falling under Ford, nor did the neglect of a year suddenly result in it. It was from many years of neglect.
Now try extending your view to some other reasonable areas on infrastructure. The water mains are blowing rather regularly, and were also under Miller. The roads didn't magically crumble after the last election. Miller had the budget for arts, parades, festivals, and for buying buildings that were left fallow, but not for infrastructure? Creation of bicycle lanes when the very roads on which you're making them are falling apart? Hint: If you've got money for discretionary spending, but not infrastructure, you're not doing the primary job of civic government. Discretion means "the ability to make responsible decisions." Is it 'responsible' to spend money on what is essential self aggrandizement, while your city's bones suffer? My answer is no.