Hi
when you decide to get your bumper sorted if the paint gets worse
I would not replace the front bumper, Just get it re painted at a descent body shop
there's nothing wrong with the bumper, it just the paint, if the paint not applied correct, it will give a cracked effect, but its in the paint and any good body shop can sort it
sometimes if the base coat it not allowed to dry enough, flash off time, allows the solvents to dry off, then the laquer is applied, the base coat stays slightly soft, when the base coat eventually dries, it shrinks slightly, causing the laquer to crack, which looks like hair line cracks
cheers
Joe