LED Strips - Data Noise Over Long Distance Between Controller and First Strip
No.
No
No.


These are daisy chained data IN data OUT Reels with a limit of 10m for power and not  1 to many “Tree” With branch reels at  noisy different ground voltages for power and data return return due to high current voltage drops of hundreds of mV.   

The data must be “snaked” or Daisy chained with alternating directions from one to the next for data.

The power must be distributed to limit the current in each reel such that the change in ground shift due to LED current does not affect the signal integrity.

I see you are going to keep asking about this and you will need to find an “Engineer” with experience to resolve this solution with a design then verify a scope and stray noise., so the  expert can achieve optimal signal integrity and no weird flashing lights over a 70m daisy chain bus.

These current loops degrade signal integrity between reels and may be prone to random LEDs flashing or not working.