Isn't LoC an outdated metric for... pretty much anything? Without context, the LoC doesn't really tell us anything. Also is this code that was simply added, or just moved over from somewhere else? We need more information!!
I think it makes sense as a sort of order-of-magnitude figure.
for example there are a few ways to count the lines of code of sel4[1] kernel maybe 10,000 lines, maybe 60,000 lines.
But to gauge it vs the linux kernel both 10k vs 20m and 60k vs 20m both give you the orders of magnitude to make a good comparison.