What kind of fps are you considering acceptable? Because that changes the answer quite a bit.
The 4060 can definitely run 1440p, but people are right when they say it's getting tight. In games like Helldivers 2 it'll be fine, but in Black Myth Wukong you'll need to lower graphics settings to keep around 60 fps stable. If you're happy with 50-60 fps on medium/high settings, you can make it work. Now, if you want everything maxed out with 144 fps, then forget it.
The real problem is the memory - 8GB is not enough for 1440p in 2026. But there's a detail people don't talk about much: try playing at 1440p but with DLSS or FSR turned on. That changes everything, because the card does upscaling really well, and you get visual quality basically for free while keeping more fps. I'd use DLSS on quality, not performance, and then you'd actually get pretty decent settings without suffering so much. But be real: if money's tight and you want to be safe for new releases without regretting it in six months, maybe it'd be worth saving up a bit more and going for something slightly better.