There's nothing I want less than multi-frame generation. I guess some people want to feel like they're getting their money's worth from their 240 Hz monitors.
If you're on Intel integrated graphics, it's a free potential upgrade that makes use of existing silicon, and you don't have to turn it on. I don't get the hate. Just don't turn it on if you don't want it.
I get that people want more real frames rather than more "fake" frames, but in that case you wouldn't be buying integrated graphics, or if you did end up with iGPU, you'd be aware of the limits and be happy for any improvements arriving via software.
It's like people let their hate of AI and LLM bubble blind them, and their brains can't compartmentalize good from bad news anymore.
It's a great option to have. Once you reach the 2-7ms frame time territory, you're approaching the CPU bottleneck for many game engines even on the fastest hardware. For newer titles like GTA VI, framegen might be the only reliable path to 120+ FPS without pinning all of your cores.
Framegen is also a good fit for low-end hardware like the Steam Deck, which can hit 30 or 45 FPS in stuff like Elden Ring but is far from the max 90hz of the OLED model's panel. For a handheld, trading a bit of 720p visual clarity for locked 90hz gameplay is a solid trade if you can get it working.
If you have a high frame rate to start with it’s pretty nice and feels smoother. But a low frame rate turned into a high one looks good but feels laggy.
So arguably you never need frame gen for a game, since it only really works when it’s already pretty nice.