Intuit does own Mint, but they sold Quicken to H.I.G. Capital (a private equity firm) in 2006. They aren't related in any way. As for Mint, the service has been a financial drain on Intuit and came under heavy fire for security issues (storing your bank account names and passwords on their server). I suspect Apple might eventually add it to Apple Card export, but I don't blame them for dragging their feet on it, given Intuit's rather spotty past with Apple.
As for getting the Apple Card for a Mac purchase. 3% cashback on purchase from Apple is pretty nice. And you can always export the Apple Card data in other formats (which may or may not be compatible with Mint or any other service - I don't know, as I only use Quicken and it works perfectly).
Oh, the article mentioned Intuit. Yeah, I'm not sure how else Mint could do what they do. I always assumed they were storing it on their servers, encrypted, much like password management companies do. Financial companies need to adopt some kind of standard, encrypted, tokenized API service for communication so everything can be unified and so that we can revoke tokens and won't have our passwords stored somewhere.
Mint is the problem in 9 out of 10 cases. It does not work with many institutions and it's log-in process is problematic. Personal Capital works with more institutions for me. There was an interview with one of the Mint founders who said Intuit bought it and did nothing with it after. Essentially it's used to capture user data and then push us to get credit cards, services, etc. and it does enough of a job that they don't need to really update it. Until a few months ago it was using Flash for some of its charts and switched off Flash only because the technology was completely deprecated by Adobe.
I'll have to look into Personal Capital, haven't heard of it. And yeah, I'm pretty sure most of us predicted that Mint was going to stagnate after they were bought out by an old crusty company stuck in the past, lol. That was definitely evident after they killed off the Mac app, which just stopped working one day. I really liked being able to check things at a glance from my menu bar. I'm fine with them trying to sell me cards, because I'm never interested, but I wish I could just pay monthly to disable that annoyance. I feel like so much more could be doing with machine learning to try to optimize and build out budgets automatically and have me review them and tweak things and for it to show areas were I could save more money. But at the same time I kind of have fun working on my budget once a month and making sure everything is on track. I always try to find some small way to save money every month and review services I pay for to see which ones I can cancel (or see if my work can start paying for them since I use my personal machine for work now).