There may be some other comments being unfair. People shouldn't complain about free software someone else gives to them falling short of perfection, but we should be careful about granting random apps root permissions.

Having root is almost never a security benefit, it allows you to close one hole, but opens up 10 new more

I think it's more like two:

• If an app granted root privileges is compromised, the damage it can cause is much greater
• The bootloader has to be unlocked for most approaches to gaining root; I consider it a design flaw that it isn't easier for users to add signing keys and re-lock the bootloader

F-droid is not secure, some of the issues had been resolved, but it’s still not recommended for best practices

This is another very binary statement about security. The article addresses a number of design issues with F-Droid and concludes that most users are better off getting apps from Google Play. I don't disagree with the design complaints in theory, but in practice it doesn't hold up. I've seen people get malware from Google Play and read a number of documented cases. I have never heard of malware in the official F-Droid repository.

I'm reminded of comparing Windows to Linux 20 years ago. In theory, Windows had a more sophisticated permissions model and more reliable logging, making it potentially more secure. In practice, it took significant care to keep a Windows desktop clean, while Linux was very unlikely to be compromised.

Of course someone with high-value secrets on their device or who's likely to be directly targeted by sophisticated threats should probably take a more conservative approach, install very few apps, and consider a hardened ROM like GrapheneOS.