What law are you referring to that would make distribution of copied of documents illegal? Copyright? Trade Secret? I'm unaware of any. If they were forgeries - and Baker first presented them publicly as unauthenticated - then the worst that could happen is ridicule. Perhaps if they were filed in court with a claim to authenticity, like for example Orly Taitz and a birth certificate, there might be legal sanction, but that did not occur.
The content of those documents has never been questioned since LNDD admitted sending them during document production for the first hearing. The main issues of "forgery" seem to be document format and letterhead, which may be artifacts of scanning. I ask anyone to cite a anything that identifies "clear forgery" of the substantive content. I recall complaints about grammar, suggesting no native-speaker would ever make such a misteak, and therefore the entire thing must be fake, and I recall questions about the letterhead and page size -- on TBV -- that suggested things had been printed from electronic copies of some sort.
It has been reported that Baker was "invited" to talk by "officials", with notable lack of clarity about whether is is a formal, legal request of any weight. That does not make it clearly an "official request". I do not believe a proper, official legal demand has been made, only an informal, email request. Feel free to go back and re-read those reports with that in mind, looking for where there is anything but (so-far not done) speculation about future legal action. Usually when Police have the goods, they don't announce that they might request a warrant later -- they just do it.
As I said, I don't believe it is ALL done to discourage Landis. I freely admitted above the Authorities would be negligent to not ask questions. It is the lackluster pursuit that makes me wonder how seriously they are taking the legal question, and whether there are other considerations in play.
I recall seeing documents that were supposedly from LNDD that were blatent forgeries. However if it makes you feel good to keep repeating that the content of the documents was never questioned, go ahead. It could be that some of the released documents were originals while others were tampered with.
The "lackluster" pursuit as you call it is likely due to the fact that the investigation is centered on the EDF and Greenpeace hackings, which are certainly much more complicated and extremely sensitive on a political level than the 2 bit games played by Landis and his gang. The French justice system probably has other priorities than chasing Arnie Baker - though hopefully there will be more light shed on this in the future.
In any case, what makes this believable is that it is totally consistent with the tactics used by Landis and his team throughout the entire affair.