There is logic to this argument:
For about the same price as another Asus RT-AX55, you could go with a mikrotik cAP AX in addition to the Asus you already own - as a start. Then you would have a truly consequential decision to make: which is the router and which is the AP?
First - re-read what
@degrub has to say about using as much cabling as possible. I agree, if it doesn't move and has an ethernet port (or you can find an easy way to add one), it should never be connected to wifi so that devices that
can't be cabled can have network access like their wired cohorts. That's smart tvs, printers, gaming consoles, desktop computers...and especially wifi Access points. I was pleasantly surprised by the ease with which I was able to learn to terminate UTP cable with RJ45 connectors, both crimp and punchdown, and running cabling was nowhere near as daunting as I had thought, once I was pointed in the direction of following plumbing and HVAC routing. If you're not a DIY-er, contractors can be hired. If I were to have to do it again, I'd buy pre-made cables in 50, 75 and 100 foot lengths...and I may just upgrade the Cat5e with Cat6 this way when I need a project