here are some ways to reduce microfiber shedding from your laundry:
Do laundry less often. Washing full loads instead of partial loads reduces release of microfibers because garments are exposed to less friction during the wash cycle.
Use cold water, which releases fewer microfibers than hot water.
Use less detergent, which increases microfiber release.
Use a front-loading washing machine, whose tumbling action produces less microfiber release.
Dry laundry on a clothesline. Running clothes in dryers releases additional microfibers into the air from the dryer vent.
BUY COTTON!
As it so happens, I dislike microfiber materials and our towels, bed linens, and my daily clothes have been cotton for about 30 years. I'm not guilty of Flipper-killing. The wife, however....