I can't comment on whether Steve "fabricates" stories or not. I often find information on his website to be useful though. Usually stuff like vehicle licensing or other local information.
As far as the situation of visitors having their laptops and cell phones inspected for information, I have never experienced that in travels to the USA nor Mexico. However, with the ongoing and inevitable "sharing" of information between INM, Aduana and SAT in Mexico, I tend to believe that it is quite possible that it occurred.
When I drive to the USA from Canada and then return to Canada, the Canadian border official asks me how long I have been out of the country. All the while looking at his computer screen because he already knows the answer and wants to see if I will tell the truth. If Canada and USA share cross border information, why wouldn't Mexico do the same? And if someone is taking advantage of a "grey area" loophole why wouldn't they check it out? (By "grey area", I mean that obtaining a 180 day tourist permit is completely legal and can be done year after year but the "intent" is that a person would do it for tourist travel rather than living in Mexico permanently)
The times are changing.