Yes it is. I've used it on fairly large project that provides educational contents for lots of schools.
Most of the complaints I read about it is due to people not using some features properly. For example, in a large form it is advisable to use lazy or deferred updating to avoid hitting the server on every keystroke.
Read more: https://laravel-livewire.com/docs/2.x/properties#lazy-updating
Also I've seen people relaying on state stored on the server side for some UI related stuff, such as showing a dropdown menu. Don't do this, use either AlpineJS, or jQuery or whatever to handle such UI behaviors.
Every tech if abused can become a hassle to work with.
One tip I can give is: ask your employer to pay for their screen casts contents. Most of the screencasts are free, but some more advanced one requires you to be a paid Livewire sponsor on GitHub .
https://laravel-livewire.com/screencasts
This will help you a lot with some small tweaks on how to use Livewire correctly, and how to handle things like modal state. Price is a bit steep (at least here in Brazil), but the contents are worth it.