But normally people just look at the reality and go "oh yes, this tool extracts the stuff on a phone and turns it into a pdf/html, how convenient". 99.99% of the time, the time a drug dealer alleging he has no knowledge of the 100's of deals on his phone is about as realistic as your 5 year old nephew with cake smeared on his face denying he ate the last bit of cake... and is treated as such. Should the act of selling drugs be a crime?- completely different topic.
You cannot assume a random company's tech works reliably without any proof, if someone's life is at stake. If yhry have cloud upload shenanighans they could be mixing up records of different people.
Evidence from a network probider is a completely different matter, but if SMS records are enough you would not need this crap.