eGPUs have been supported for a couple years now. Grab a Mac Mini, an eGPU, max out the RAM, add an external hard drive or two, boom, your ‘pro consumer’ Mac for about $2k.
Just don't get an nvidia GPU for your eGPU solution.
Sure, and that must be frustrating to an extent. My 2018 MacBook Pro’s GPU does well enough for my purposes with my HTC Vive, so I guess I’m not in the market.
Disable System Integrity Protection so you can use an eGPU. What could go wrong? :)
I’ve never had, nor will I have, SIP enabled on any of my dev macs. There are too many things I just can’t do out of the box.