Damir   Unfortunately, you cannot see everything just in black or white man,  you need to remember that all the changes Peter is doing doesnāt need to be the ones you want, maybe for other users the app works flawlessly for their needs, and the changes Peter has been making are necessary for them, I think saying the app ādoes not have a good logic on stage operationā is a little insulting on the time Peter has invested in making the changes other users have, and also to those users whoās voices needs to be heard too.
I donāt want to sound rude, but try to put yourself in Peter shoes, and having some random guys complaining all the time, saying āthis is bad, or unnecessaryāā¦. I would try a more positive approach, that offers solutions instead of complaints, like : Hey I think this ________ might work better this way______.
   
IF, you let me give you and advice, try to use Peterās templates for making the threads.  Those are simple and exact to the point, it shows to Peter that you are respecting the way heās asking us to deliver the info, so he can organize it better, and also the templates force you to go straight to the point.
 
I honestly hope this msj is received in the best way man.   Cheers.