Bermuda is trying to tell you something about not being happy. Those are non producing seed heads growing above ground trying to help the grass feel better about something. It can't spread and probably needs to be mowed in addition to other possibilities.
Bermuda Grass Seed & Plugs|Bermudagrass Seedhead Formation|Prevent or Control Seed head Bermuda Grass|Bermudagrass.com
The "seedhead" issue is much more a factor of management than anything else such as variety choice. If a Bermuda is throwing blooms out every 5 days, then it is stressed. Under stress conditions, even the vegetative sod Bermudas will throw up a lot of blooms. Stresses include - poor drainage, poor watering (too much AND too little), drought, low Nitrogen availability, soil compaction, temperature, etc.- low inputs of Nitrogen is the most common cause of a Bermuda turf throwing a lot of blooms. By improving these management and cultural practice traits a huge reduction in the amount of bloom will be seen.
Note mention of the frequency of producing seed heads
Now you need to play detective