They should have waited until the software was done. Even with up to date software, various vehicles, include Chrysler's, Jeeps, Land Rovers have had terrible reviews due to the "working as intended" transmission. As for the Cherokee, it was truly a failure that the government and FCA recognize. Hundreds of thousands of owners with transmission failures and replacements. FCA letters warning of the long term reliability caused by the software.
Simply doing the TSB update is not sufficient for most of these owners EAK, unless they purchased a relatively new Cherokee. You should read up on some of the issues with the 2014 model and you will understand better.
Check your sources buddy. There is a known issue with a wiring harness crimp on limited production runs of the ZF-9 that obviously isn't fixed with software. The reported failures with the NHTSA is literally in the hundreds, not hundreds of thousands. But yes, there are literally hundreds of thousands of Cherokees on the road. The Cherokee TH is a little monster and there are plenty of us 2014ers cruising around without issues