People who use "not having enough time to exercise" as an excuse not to lose weight

It's usually recommended that the quality of the diet be the first thing that changes and that it is a slow transition. Making super quick changes (like suddenly starting to go full tilt or sudden eat 30% less) will do more harm than good as it decreases your odds of sticking with it by an inordinate amount. Lots of small changes to the diet's quality over an extended period of time are a lot more likely to stick. Also just an fyi if someone is burning more than 2-3 pounds within a week that's getting unhealthy. Straying much further upwards in weight lose speed gets into dangerous territory

I never said suddenly cutting your calorie intake by 30% lol, yeah, that'd be nuts and end horribly. Just cut it by even 3% from break even and the weight will slowly come off.

It would both be better for your body as a whole and work better for losing weight to change your diet to a healthy one incrementally over a moderate period of time