Ah, sorry, I mistook Nexus 4 for Nexus 5.

And the reasons? Mind that they are just my opinion:

• Canonical and their attitude towards the rest of the Linux/FOSS world. This is one good example. I do not want to support such attitude.
• Mir (related to the previous point)
• No multitasking
• Unintuitive design (I am complaining about SailfishOS 2.0, but that's nothing compared to UT's side and bottom swipes).
• Alarm doesn't go off when the phone is turned off.
• The focus on Web apps and its effect on the native app situation.
• Last time I heard, it was nowhere near the functionality completion or optimization of SailfishOS.
• After the Ubuntu Edge con and the issue with Ubuntu (Desktop) automatically sending your searches to Amazon for search suggestions, I wouldn't rely on it for my data/privacy.

Don't give me wrong, Ubuntu Touch may have changed a lot since I last saw it and I may be pleasantly surprised and even change my opinion, but some of the aforementioned things are crucial for someone coming from the Maemo/Linux world. I used to be a Ubuntu (Desktop) user many years ago, but I'm glad I left.

PS: Still no progress on the patch, sorry. I'm looking into some other things that need fixing for my use case, but I'd definitely like to get back to it.