I don't work at or for PIK, but have used Ryanair many times. Lets make the point that if PIK wasn't there and Ryanair didn't fly to two dozen destinations it would be a lot more difficult to come and go into and out of Scotland, the old standards being MAN or LHR.
You open your post going on about a 'flea pit' and that sets your tone. If you don't like it then use LHR/GLA on BA or BMI and see how you like that. You'll certainly need more time to spare.
As said, never had any trouble with the staff and don't recognise your problems. It often takes two to cause such problems, especially if one arrives at a 'flea pit' with attitude. I don't think others of us would describe it so.
Re smoking, the airport declared itself 'smoke free' before the recent law change in Scotland. So write in and complain. Re the rope barrier, Ryanair often shut the rear door before boarding is complete and PIK remove the rear steps - removing the barrier may come first. And you can expect to get shouted at anywhere you digress airside to take photos in this day and age. Stick to around the perimeter where PIK is one of the most photo friendly airports to be had.
So write to PIK, or use GLA, and those of us who appreciate having the airport and its services will get on with continuining to do so.