I don't think it's truly trunking, but we just have to program it as a trunking system in Uniden scanners. It would be a shame to have to program one frequency as an entire system. I think there's only like, what, 0-99 quick keys? This would mean a trunking system for every single conventional DMR frequency. In a busy city area, that's going to be a mess to program.
No. It doesn't take any more hassle or data to program a One Frequency Trunked system than it would to program the same talkgroup data on each conventional/simplex channel. The data is the same, it's just organized more logically in a One Frequency system than it would be by bastardizing a simplex/conventional freq with a bunch of extra parameters. Also, you can program multiple systems with the same Quick Key, and turn them on and off together. You can also turn groups of systems on and off with Service Types and other means.