Interesting. It’s actually been the complete opposite for me. I am fairly new owner.
I recently realized that the more I use the phone, the better it gets. The phone almost seems to learn from you, but it’s probably the other way around; you simply become more accustomed to it ;). I honestly did not think that I would grow to like it as quickly and as much as I do now. I was an iphone/mac user for many years, android many moons ago, and I think the Librem 5 has ruined all other OSs for me forever cause I can’t see myself now with any other personal phone or device, for that matter, that does not run on Linux. Not complaining though! One look at the Pi-Hole logs is all that it takes! Go back to your Faraday cage you creepy apple thing 
The first 3-4 days weren’t all rainbows and smiles though. I did consider getting a backup phone from Jolla with Sailfish OS (no way in hell I’m using apple/android again. Unless, I have to for ex.work ) because I was used to the feel and weight of an iphone 8 and never been a fan of big bulky phones. To my surprise, I forgot about the weight and backup phone after a few days. In terms of usage, my biggest frustation was the touch haptics, responsiveness and issues with the web browsers. I poked, tweaked, broke and experimented with all the settings in Ephiphany, Firefox, Ungoogled chrome, Brave (no success) and after a week settled with ungoogled chrome but it’s poor resolution/scaling really started to bug me after a while. I really like Ephiphany but it crashes way too often for my liking so I went back to Firefox. I recently discovered the Mobile App Switcher extension and my prayers were finally answered. I highly recommend that extension to anyone who is impatient (5 seconds to load a page? I don’t think so. Next! ) or that simply needs a stable web browser to be happy to get through their day. I have yet to try out the Firefox Mobile Config that someone here posted about as the flickering menus do get on my nerves sometimes. I’m quite exited about it.
Anyhow, I honestly recommend everyone to give the Librem 5 a chance and play with it for a week at least before giving up on it. Poke it, tweak it, break it (not physically), heck install everything from the Pure OS store and cry when you realize what a great idea that was and how you need to do things the old fashioned way sometimes. The command line is my best friend. When in doubt, repeat that in your head several times and remember, you can always re-flash the image if you go too far ;). What is the worse that could happen? Well, if you want to find the hard way why you shouldn’t unplug the phone during the flashing process, you’ll just brick it and experience your own version of a kernel panic for the very first time. If not, you’ll just need to restore from a backup and all that stuff that goes with it, or start with a clean slate and pretend is a new phone, sometimes that last is kind of nice. What’s the best that could happen? You’ll ramp up your Linux skills and commands, and perhaps learn a few things the hard way.
The Librem 5 is such a fun phone with unlimited possibilities, which you’ll learn to like and appreciate with time if you are willing to put all expectations behind and accept that it is not an iphone or an android phone. It’s a GNU/Linux OS phone, and it’s not a Debian mobile port, its a desktop distro. This means that not every app out there is going to be mobile friendly or adapted for touch screens. Some apps might not even work, some will but after you twinker with the preferences, some are likely never even going to exist but there’s always ways around things. As with all Linux related things, its a do it yourself type of thing here, and that’s really where the beauty of all of it lies. If you don’t like something, make your own! It’s open source. The community will certainly appreciate your efforts and heck, you might even inspire others to do the same 