Well, I'm not going to recommend NOT getting blind spot mirrors, but I will say I believe most of the issue disappears if you have your mirrors adjusted correctly.

I'm among one of the generations who were taught to adjust the side mirrors so you can just barely see the back end of your car. That's wrong and leaves you essentially seeing the exact same view from your side mirrors as what you see in your rear view mirror.

The right way:
Lean your body toward the center of the car - adjust the passenger mirror so you barely see the back edge of your car then move it outward a tiny bit more.

Next, lean your body and touch your head on the driver's window - adjust the driver's mirror so you barely see the back edge of your car then move it outward a tiny bit more, too.

Now fine-tune the setup so cars appear in the side mirror before they fully disappear from the rearview & so cars appear in the window before they fully disappear from side mirror. Repeat for other side. An ideal safe location to test this is on a residential street where cars are parked at the curb.

I've been doing this for a while and it makes the blind spots almost disappear in my VX. (They completely disappeared in my other car.) Be warned - it takes a while to get used to, but it's FREE!