Here is the quote from Christy, from that article: "I have been told that other members of his family did not cooperate with Texas EquuSearch, a Texas-based non-profit organization that voluntarily searches for missing persons, and they also told the Prosecutor’s Office to stop looking."
I wonder if there was some kind of miscommunication, mistranslation, or misunderstanding between Christy and the rest of the family. This statement from Christy about family not cooperating with searchers seems to be the total opposite of what we've seen from Robert's daughter and friends across numerous MSM sources.
His daughter has been vocal, but my understanding is he has other close relatives.
I don't believe it would have made any difference, IMO Texas E search went there way too late. The time to go look for him was as soon as he stopped contacting friends, as soon as he stopped posting on facebook, as soon as he told someone he'd been robbed of his luggage, as soon as he missed his appointment with the real estate agent.
There are many risks in travelling alone, and not just to a foreign country. If you want to be completely safe, if you want to keep someone else safe, there has to be some type of deliberate connection for that exact purpose.
Someone needs to know what hotel you're going to be staying at, when your flight is, what you're planning to do (with names, places, dates), and then be in regular contact to confirm you've checked-in, come back from an outing, etc.
And the contact person has to be capable of taking action if something goes wrong, including flying out to rescue you, if you have a serious medical or other emergency.
Unfortunately, he'd lost his primary connection, and I guess everyone assumed someone else would take care of it.
It's wonderful when strangers help, but it's not their job, and they assume you have family to take care of you. Depending entirely on the kindness of strangers is not a strategy to guarantee safety.
JMO
ETA On the other hand, you can accept the risks and therefore accept the consequences that sometimes people run into danger.