It doesn?t help that until recently at least, experts and Prosecutors have been dishonest about the reliability of Forensic Science. It?s highly subjective (junk science in some cases) and only in the past decade or so have many of the problems with Forensic Science been brought to light.
https://www.sciencefriday.com/articles/the-flaws-in-forensic-science/
From the "about the author" blurb for that article:
"Lauren J. Young is Science Friday?s digital producer. When she?s not shelving books as a library assistant, she?s adding to her impressive Pez dispenser collection."
That resume' doesn't exactly inspire a great deal of confidence in her expertise on the subject matter.
A number of previously-accepted forensic techniques have been discarded as being poorly- or un-supported science-- bite mark and blood spatter analyses come to mind. Other techniques have been oversold and/or misused as unique indicators (eg, fiber analysis and CBLA) though they still likely maintain some usefulness. All of that put together still doesn't invalidate the other methods in use. Don't throw the baby out with the bathwater.