When there's almost zero point to OC anymore, cpus and gpus pushed right to the edge, just to beat the competition, then there's an equitable, as in zero, amount of need to spend time and money developing or updating software that really doesn't do anything worth mentioning and isn't as widely used as MSI Afterburner, even with Gigabyte cards.
4070 OC cards offer a massive 4% performance increase over stock, and very little OC headroom, I see what you mean. You paying for the RGB lighting at this stage.
My new card isn't any better but I didn't buy it for OC.
Ohh, so I could get 310fps in CSGO instead of a measly 300fps if I spent extra for an OC model. Or maybe I could get an extra 2-3fps in Cyberpunk. Oh wow, what a deal for an extra $130+!....
OP has an 8 year old 28nm Maxwell card which should overclock about 25% beyond stock which would make it pretty comparable to a GTX 1070 or 1660Ti.
It's so old that you can modify its clocks in the vBIOS (with MaxwellBiosTweaker.exe) to make any overclock, voltage or fan curve permanent and thus work in any OS with no overclocking software at all. So it was truly from near the end of the golden era of overclocking.
^ I OC'd both my 660ti and 970 to about 125%. The difference was noticeable. Tried to OC my 2070Super (which has a full cover waterblock) and it was near pointless.