In my experience those can be a bit finicky depending on the outlet. My connection has been good on WiFi so far. Even on fps games like apex I do just as good as I do on Ethernet (not great)

Actually imo for most people it's not gonna be better than WiFi.

There's a fairly high chance of having issues depending on your electrical wiring and choice of outlets.

Additionally the latency is not amazing and while you may get higher raw bandwidth (if your WiFi is old and you signal is garbage) for a lot of users latency has more of an effect on the quality of their experience and if it's not any better than their WiFi was they aren't likely to be all that impressed.

I would either upgrade the WiFi instead or suck it up and run some Ethernet.

The cables can often be easily tucked under the moulding between the wall and floor, especially if you have carpet. Ethernet is low voltage so you do not really need an electrician to wire it for you.

Worst case find a way to shove it through the walls or behind some moulding, it's not a fire risk at that wattage so go nuts. No matter how annoying the effort, in the end you will be much happier for much longer than any other solution.