"Awkward movement", like climbing grades, is subjective. One climber's "awkward movement" is another climber's "rad futuristic beta". There of course is always the possibility that the climbers who are bashing you are just ego-driven and placing blame of their failures on your sets.
However, that being said, there's always room for critique. "Awkward" is very vague to describe a climb, so next time someone tells you that, ask for a specific example and why it's awkward (if they can't tell you, they're probably just whining). Here are some things I look for when I check my sets:
1. DOES THE CLIMB NEED FEET? 90% of the time, you can never have enough feet, and this is probably the most common issue regarding awkward climbs. Forcing people to switch feet, smear, or campus all the time actually makes the climb very jerky unless your switching feet/smearing/campusing is justifiable.
2. DOES YOUR HOLD PLACEMENT FOR EACH MOVE MAKE SENSE?
Example:
a. You forced a left hand move to a good hold
b. You then force a right hand move to a bad hold
c. You want the next move after that to be a forced left hand, so you choose to put up a small one-hand crimp
This is considered "awkward" because for a gym set, it doesn't make sense. Because c. is a forced left hand, you are forcing the climber to come off of a good hold while launching off of the right hand which is still on a bad hold - climbers will want to do the other way around instead. Hence when you set a sequence like this, it doesn't feel right and it becomes "awkward".
3. IS YOUR CLIMB CONSIDERED "OUTDOORSY"? This can be a fun set depending on your beta, but for the most part, it's a bad assessment. "Outdoorsy" ideally shouldn't exist in a gym (unless you deliberately set a simulated bad route/problem), mainly because it's not ergonomic - it's tweaky, it's sharp/painful, it has a very futuristic beta, it hurts your back, whatever. Remember that climbers probably won't blame nature for making the rocks painful/awkward, but they will bash the hell out of a setter's ego for the exact same climb.
4. CAN EVERYONE MAKE THE MOVES? If you notice that, for example, shorter people are doing your climbs more easily than the taller folks, even if they climb around the same grade, then something needs tweaking. You could have made your feet either too high or too low, or moves that are *drum roll* too reachy. Remember that not everyone is as flexible or as tall as you are. Ideally you want everyone of every height to be able to do your climbs, not just contortionists.