Text looks perfectly fine from a normal distance on a 27" 1440p monitor. And yeah, the pixel count IS significantly higher. It’s about 16% more.

However, if you want higher power consumption and much lower fps for little to no gain, you do you brother.

Do you use your tv for work 8+ hours a day with static elements on the screen at all times?

5k makes no sense in a 27" monitor and no gpu would be able to actually drive that many pixels in a game at a high refresh rate.