I can only speak for myself, but your question doesn’t make much sense, let’s take this one
I was looking at the possibility of having an LFO trigger samples
What does that mean, i guess i think you need to be much clearer in your wording
Forget about why Elektron allow you to assign a sample lock, remember trigs can be dynamically converted from all sorts to all sorts so there is good reason for retaining flexibility
What do you want to do ? What is it you think this question (that which you think you are missing) will facilitate ?