No. No. No. No. No.
The restricted zone in México is: within 50 KILOMETERS of a coast, or 100 KILOMETERS of a border. Non-citizens CAN own property freely outside that area without a fideicomiso. If you don't want a fideicomiso you can create a corporation in México (with you as the owner) and have the company own the property. This will create annual filing requirements and possible tax obligations - so it's not as convenient as people make it sound. Fideicomiso's are issued for a term of 50 years, and are renewable. The bank is owner in name only and has no rights to the property as long as you're current on your fees. YOU, on the other hand, have free reign over what you can do with the property. And when you die, it will go to whomever you named in your documents - and they can renew the fideicomiso as well.
Also recognize that México has absolutely no requirement for real estate agents to be trained or licensed. Notaries on the other hand are part of the legal structure and do much more here than their counterparts in the USA.