This is a pretty solid example of why spells that create mental effects, but are using "natural language" to do so, shouldn't mix.
Either you leave it up to table adjudication, or you spell out exactly how the spell is impacting the target, explicitly factoring into account the perceptions of the target and what emotion or action is being compulsed.
For sure, and I think one of the goals for the revised 5e ruleset was to have less "Mother, may I?" rules, where the DM interpretation could arbitrarily take away intended design or player fun.
It's really hard to balance, where on the one hand a DM is a stabilizing factor of the game, making rules judgement to ensure fun and verisimillitude for all (which can be at odds often), while on the other hand, the DM can really do a number on what is intended design.
Some DM's, for instance, did believed that sneak attack was too strong, and often took away the rogue's ability to make use of the feature because of that.
As for Command, the intent seemed clear to me. The spell has been made more effective, though less flexible, and I really interepreted this change to be intentional.
Now we see some interpretations that make the PC find invisible doors on one hand, and have free will to comply on the other hand.
I just think this should be a level 2 spell, that's all.