Not at all. These are the ones I ordered: https://www.amazon.com/dp/B08VHQSXD1/
Basenor Tesla Model Y Mud Flaps Splash Guards (Set of Four) No Need to Drill Holes https://www.amazon.com/dp/B08VHQSXD1/ref=cm_sw_r_apan_glt_fabc_E2WV2YF3AVY61XSY1NYX
I still don’t have my ordered Model Y, but I added this Mud Flaps to my list of accessories that I’ll be getting:
Basenor Tesla Model Y Mud Flaps Splash Guards (Set of Four) No Need to Drill Holes https://www.amazon.com/dp/B08VHQSXD1/ref=cm_sw_r_cp_api_glt_fabc_QYNHXQABMHA5R7YZW3MB
They absolutely do, but you need them anyway if you don't want to kick debris up on your side panels.
All the flaps I've seen are ugly as shit except these: https://www.amazon.com/gp/product/B08VHQSXD1/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
They just look like an extension of your car's trim. I only put the two on the front. Back flaps only protect the car behind you, and only if they're tailgating closer than they should be.