i've had no problems with CBHC and it runs just fine; no bricks.
I don't know if your a troll or not. But CBHC is very much not "safe"
Here's a classic example that could of got you bricked
you pirated a ds game in the past. You then officially purchased it and redownload it. You install coldboothax and ignore checking if the title properly launches without sign patches. Because to some people, they'd think "well I bought it and downloaded it. Should work just fine"
And you get a fat bricked console as a result.
Why?
Because the wiiu is a bit stupid when it comes to tickets, a legit ticket and a fakesigned ticket, can exist within the same ticket file, and so you manually have to go in there, and strip out the fakesigned ticket. Meaning that commonly the first ticket in that file is read. Aka, the fakesign ticket. causing a brick. even though you have a legit ticket, it's just not the first one.
Further more, coldboothax doesn't allow direct autobooting into titles. A feature of the wiiu that people had to drop for coldboothax.
Additionally, if for whatever reason your Nintendo account is no longer valid, or your console get's possibly banned.
Your not bricked from that unlike coldboothax. Coldboothax also required sometimes programs to be patched, see FTPiiU everywhere coldboothax edition.
Additionally, coldboothax isn't good in the longer term. See the dsi hacking scene, for literal years, almost to a decade,. It was impossible hack that system if you got it second hand, since it likely no longer had the purchases it had, assuming you could even redownload them. This meant even though it was previously hackable, most of the public couldn't acess it because Nintendo shutdown those stores.
Again, we needed this environment.