Gaming video cards were never intentionally designed for mining, I believe. Price tag, power consumption and the amount and speed of VRAM decide their feasibility. Not sure about the GPU chipset. Even my now-in-storage 2012 GTX 680 4GB supported mining because it had 4GB VRAM as I found out.
Good minds would calculate the losses they could afford and get video cards within the right specs. Gaming video cards were cheaper than dedicated mining devices so they were the thing back then.
Electricity where I live was cheap back then so it was a good opportunity but I didn't risk it. This is life, don't hate
Noticed the past tense above! I believe gaming video card mining crises stopped like 2 years ago.