It's bad enough that they had full voltage control as far back as the second-version S7 without ever making it open. And building ASICBoost into the S9 from the start then waiting two years to make it open. And then speed-locked autotune firmwares, and the perpetual violation of open-source licensing on everything they've ever shipped out. And let's not get started on selling dust-filled machines as new, allegations of charging for old hardware while mining on new to steal further profits from cloud-mining contracts, and the various BitCH fork and pump and trade-war fiascos. When you already demonstrably can't trust a manufacturer, giving them a pass while working to remove transparency and user control even further is unacceptable.
Maybe it won't affect most folks directly. But the precedent should still cheese us off.
Furthermore this is removing features originally present when bought. Was this even written in the upgrade notes? No, it wasn't. This is disrespectful to their customer base to say the least.
"Enhance security" = You won't be allowed SSH access into your Asic miner anymore.
If they respected their customers, it should have been optional, with an option exposed in the web ui to disable it.