Agree with you OP and have signed.
It was grossly unfair when it was brought in, even more so now that the tax thresholds are catching ever more people.
When they first announced it, it was going to be a cliff edge at 50K. It was a huge deal to us at time with DP our only income at around £49k. We stood to lose all our child benefit for 2 kids. The tapering off thing was the their concession when people grumbled.