I don't know why you'd run a flatpak you don't trust with all that permissions micromanaging. That's the kind of thing you do when reversing malware, not when using everyday tools. The idea that that kind of flatpak even exists already portrays a very sad state of software.

Corporateness is also not entirely irrelevant, since the incentives are different, and 'corporate' is highly correlated with proprietary, spyware-ridden software. Also, the author talks about corporate languages (and then throws in the tools too), which have their own different set of problems.