Seed snails!?

Have you guys heard of the latest trend on Tiktok and Instagram? People are laying out plastic or something that isn't penetrable, laying compost on it, sow seeds, then roll it up into 'seed snails'. It apparently makes it easier to separate the plants later on, and it holds moisture etc, and removes the need for seed trays.

https://www.youtube.com/watch?v=d9AinRRQ89o

Have you tried it? I might experiment with that!