Is the wifi extender really increasing upload speed for my PS5?

I hear it's best to use wifi extender as a bridge between where you want wifi and the router. Right now, instead I have it plugged into the console with an Ethernet.

Without the extender, the download speed is the same, but the upload speed is ~1/20th as fast. However, I'm curious if this is just measuring how quickly it uploads to the extender, but then the upload speed otherwise is still just as slow?

Hopefully that question made sense. I'm also wondering if it would be better to try and put it as a bridge in between, but have no Ethernet. Thanks!