No, these should not be flagged, unless they do not fit the Arqade format or are duplicates.
Asking about commands in Minecraft is on-topic. It even has it's own tag - minecraft-commands, which had
210 407 questions at the time of writing.
Asking about which commands to use in a particular circumstance, how to use commands, the debugging of commands etc. on-topic.
However, we need to watch for questions where the OP asks for a usable line of code without trying to understand it. We don't want a Minecraft version of StackOverflow's
plzsendtehcodez. An example is:
How to make a massive new boss with command blocks?
I really want to make a new boss. I think this is possible with commands. Can anybody tell me a command which makes a new massive boss?
That question would be flagged for several reasons.
- It is too broad for Arqade's format. There are too many possible answers, and making a boss like this would require a really long answer. This could be flagged as 'Too broad'.
- It doesn't put any research effort in, nor did they try to solve it themselves. It wants the community to write the command for them. It should be downvoted.
- It is unclear. The OP doesn't show specifically what it wants the boss to do. Nor does it show what version of Minecraft is being used and any limits that are in place (e.g. command blocks disabled). It should be flagged as 'Unclear what you're asking'.
If such a question did meet the above criteria (was clear, provided a specific set of instructions and attempted to do the majority of the work themselves) it would be appropriate.
TL;DR: Questions about commands are on-topic. However we still need to watch for those questions that don't fit the Arqade format.