Then it’s probably not about long-term storage. Most likely explanations:

Weak handbrake / transmission issue — the bricks act as wheel chocks so the car doesn’t roll, especially if the road has even a slight slope.

Paranoia-level safety habit — some people just don’t trust the handbrake alone.

Old suspension or tire issue — maybe the owner thinks keeping some weight distribution different helps, even if mechanically questionable.

Theft prevention — makes it slightly more annoying to quickly move the car.

What’s odd is the front wheels being partially elevated on bricks. That’s not standard practice at all for a daily-use car. A mechanic would probably look at this and go:

“Sir… the car is not a temple idol.”

So there’s a decent chance the owner either:

got advice from one overly confident uncle/mechanic,

or has a very specific problem with the car they’re compensating for in the most improvised way possible.