Re: The idea that ShotSpotter 'alters' or 'fabricates' evidence in any way is an outrageous lie
In this case, ShotSpotter did nothing to bias or alter the outcome.
And your evidence for this is what? The claim from ShotSpotter? Yes, that's very convincing.
One of the many problems with the US justice system is that it is increasingly being infiltrated with black-box proprietary algorithms. Defendants have claimed this violates their due-process and Sixth Amendment (right to confront witnesses) rights – correctly, in my opinion.
The vendors of these systems need to be compelled to make all of the relevant information, including hardware designs, source code, test results, and actual data, available to the defense and whatever experts it wishes to employ. If not, then it shouldn't be admissible. If that's a problem for the continued commercial success of those vendors, tough. They decided to get into the conviction business.