Many of those items aren’t as critical as the oil level in the engine. I check the oil level every 500 miles or so. My high strung Coyote will use about 1/4 quart every 1,000 miles. My $15K zero turn mower with a Kawasaki engine will use oil, particularly when it’s 100 degrees outside. I suppose you’re one of those guys that relies on your oil monitor to tell you when to change oil.
I can gauge how much gas I have based on the miles since last fill up. Not hard to determine if the speedometer is accurate for speed and miles travelled. I’ve driven a vehicle for many miles with a broken fuel gauge and not once ran out of gas. When a battery gets 4 years old or so, I’ll occasionally check the voltage manually to see if it’s still good. No, when the ability to manually check my oil level is gone, so will I.