If you can, run it, report issues and help them develop it.
I'll give myself as an example, between writing that first comment and replying to you, I downloaded and built ladybird on MacOS - it took 25 minutes, most of which was me fixing build dependencies - and here I am replying to you from an alternative browser. Text navigation is a little weird and text boxes are weird, but so far it works.
Of course, if building in the background is more effort than you're willing/able to expend, then continue using Chrome or Firefox until others finish the alternative, and then decide if the time required to download, install and get used to a packaged browser is also going to be a hindrance to you paying your bills.