To answer your title -that it doesn't seem to be getting easier, honestly, that's because for a lot of babies it doesn't, or at least it takes longer than you'd expect.
Every baby is different right?
There will be babies that do get easier, and their parents will often tell you about this because it's reassuring, especially for mums that are finding it hard initially.
Then there will be those that try to be nice by saying it gets easier, because it feels like the right thing to say to a tired possibly struggling new mum.
Then there'll be people that just stay out of the conversation - you can bet a lot of those didn't find it easier, but it feel a bit mean to say so.
And you'll get the occasional one that'll poke their head up and say it didn't get easier, or that it took years to get easier, it that it stayed as hard but different, and they look like either the exception or mean people.
So honestly, some people will have been reassuring because it felt like the kindest thing to do.
Personally, the constant wanting to be held did ease off around your babies age. That was replaced with new challenges, which resolved and then new ones etc, and I think that's parenting basically. Some people find babies easy and toddlers difficult some people find babies hard and toddlers easy. Some love school age kids. There's easy and hard things about every age.
One day, these issues will be a thing of the past, and it won't be easy, but it'll be different. Your stress then might be them waking more at night, or becoming a biter, nightmares, toilet training etc. But for a short while, at some point soon, your baby will likely allow you to put them down for a while. Then they get mobile and follow you everywhere, and it's a different kind of no peace.