I just disassembled mine for the first time and it took quite a bit of pressure to remove the base plate. However, I can see where after a number of disassemblies the way it is held on could become loose.
This design is likely due to trying to get one extra round to make the people who judge carry guns by their capacity not their reliability. (as evidence by how many people who will carry a aftermarket magazine in their G43X or add new internal parts to a magazine in order to get a few more rounds.....as this obviously negates the need for training).
If they had kept the larger magazine at 12 rounds likely they could have used a traditional base plate and retainer that required a tool to depress to remove the base plate. (Just spitballing)
Due to the amount of effort it took to remove mine I am not worried about it currently but it is definitely something to keep an eye on (as are all magazines as they are a wear item).