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.
Making distro clones with premade software, wallpaper, etc.
Systemback is easy to use, but then complex to install for normal people (lack of instructions, have to manually make the partitions, needs 3 partitions but nothing states that in the software).
Post-Cubic customizations are easy for normal people to install but way more complex to set up (basically terminal only, need to know more abstract terminal commands for specific customizations like pinning an app to the bottom panel).
Basically, the classic Linux GUI problems.