It's not out of irritation, but out of the fact that portable device questions and issues are very specific and distinct from other things that come up, and usually run along the same lines. They are pretty much limited to how to get musicbee to talk to a particular device, how to transfer specific amounts of data, file formats and conversion (including playlists), two-way syncing, and errors which might or might not be MusicBee's fault. Giving them their own section means that they will not get lost among other questions and reports, which is better for people seeking help with them as well as easier for us to maintain.
I didn't find the existing structure for them clean or sufficient, because there was the bug reports subforum which was clearly labeled for portable devices but clearly not meant for general questions and help, and many uncategorized threads in the general or questions forum. Someone looking for an answer to a question similar to theirs would have to rely on the very limited forum search engine or maybe Google.
Anyway, if that doesn't persuade you I doubt I will be able to. 
It's just that I feel structure and hierarchy is the basis of logical navigation and making it possible to find stuff as easlily as possible.
I am not arguing the need for, and advantages of having portable devices issues and questions seperated and assembled in dedicated areas.
But if that results in breaking some logics in structure and hierarchy (as it is done now), that's not ideal.
With the latest change, now if somebody has a question about syncing a portable device, with the latest forum boards change, he/she should not post that under 'Questions' anymore?
That's not logical in my opinion. It is a question after all.
If somebody experiences an actual and verifiable bug in reference to an external device, with the latest forum boards change, he/she should not post that under 'Bugs' anymore?
That's not logical in my opinion. It is a bug after all.
Repeat for 'tips& tricks'.
The only sensible and correct solution in my opinion would be to have childboards for 'Portable Devices' under 'Questions', 'Bugs' and 'Tips & Tricks'.
And as a sidenote and follow-up on this line of thought, it would be very useful if a member with experience with iPods etc. could create a 'sticky topic' under Tips&Tricks> Portable Devices called something like "syncing with Apple devices".
A shortcut to that topic would probably be a hit, and save a lot of typing in answering questions on this matter. ;-)