Doordash doesn't operate where I live but the last time I ordered any from a food delivery app while traveling it was a premium of about $30 per plate over the cost of home cooking. I feed my family of 4 on a grocery budget of about $500/month and that's without really trying to be frugal

It also doesn't take a ton of mental effort to boil some water, toss some noodles in, strain it after 5 minutes then pour a jar of spaghetti sauce in, which for a household of one can easily make up 3 meals, and costs about $5. Toss a freezer bag of veggies (less than $1) into the microwave and you've got enough veggies to pair with multiple meals too. Too much veggies in one freezer bag? Cut it open, pour your preferred quantity into a microwave safe bowl with a lid and you're golden

If one can afford to eat out I'm not going to criticize them for eating out or ordering delivery on a lazy day, but if they're draining their bank account because they never learned to cook something basic that's something they should probably take the time to learn