Sounds like much ado about nothing. There is a sliding lock that prevents folding. Some may need a 2 second adjustment with a pair of needle nose pliers to make it more positive. Cleaning? There are more joints to trap food, but all are accessible.
If you can use a spork rather than a spoon, you can find them all over.
I went the same way to get a spoon and an Esbit wing stove in a 450ml mug. Works great. Add a turkey roaster foil lid and some foil for a windscreen and you have a tough SUL kitchen.