I don't know about this - I'm on the fence.
I also think long official engagements are a bit daft.
But on the other hand, when are you actually engaged? Does there need to be a formal proposal, ring, and big announcement to everyone? Or is it when you both agree that you are going to get married? I've read loads of threads with people saying it's silly to 'get engaged' (proposal, ring, announcement) if you've already discussed and agreed on marriage, as you are already engaged really. It's an intention to marry.
And there could be lots of reasons why there's an intention and agreement to marry, but not immediately.
Am I engaged? I don't know. Have discussed and agreed marriage with DP, but it's not going to happen for a couple of reasons until later next year. We've not told anyone. We won't be doing a 'proposal' and probably won't bother with engagement ring. But we do have that intention and agreement. I wouldn't call myself engaged, but I suppose I am.
I also had a feed on facebook this weekend from someone I know vaguely who announced she'd got back from holiday and appears to have got engaged. Same situation, they agreed to get married, low key, and he surprised her with a 'proposal' and ring on holiday. she was a bit confused - all that wasn't necessary to her, but appreciated it, but also wondering how she'd thought they were already engaged, but he didn't.
Different people have different ideas about what engagement is.