Does bcf triexta carpets have static issues?

Shouldn't be an issue. it is controlled down to 3.5 KV at 70, degrees & 20% relative humidity... That is considered Human sensitivity, below that we cant feel the discharge.

If the house is drier than 20% RH all bets are off (WINTER!) and you might throw 3" sparks .. That wouldn't be covered & would be considered normal.