Weird frontend developer interview experience, is this a scam ?

Hi everyone,

I had an online interview today for a frontend developer role (3 YOE). I prepared really seriously for it because the package was good and I’m actively looking to switch.

When I joined the meet link, there were around 16–17 other candidates in the same call. After a while, one person (I assume the interviewer) joined and didn’t ask anything about our experience. Instead, he just shared an assignment and asked everyone to submit it by 1:00 PM today.

The tasks were pretty basic:

Convert one JSON file into another format

Create a responsive header using HTML, CSS, and JS

There was no discussion, no technical round, nothing — just a mass assignment and deadline.

Is this a normal hiring process anywhere? Or does this sound like a red flag?