We love to praise linux constantly and tell everyone to change to it (they should) but what are your biggest annoyances ?
Mine would be, installing software (made even more complex by flatpaks being added, among the 5 other ways there already were to install software) and probably wifi power management issues.
Hibernation should really soon work out of the box with Secure Boot on. Afaik chromeos was looking into that
Also paranoid people saying that e.g. all TPMs are made by the devil and will spy you to death lol
TPMs give a false sense of security. Hardware security is really hard.