Observations of the user side after creating several data entry forms in my career:
1. There's always the assumption that there's someone on the other end who will clean up your data.
2. Validation is both too restrictive and unrestrictive at the same time.
3. Emoji. Emoji everywhere.
4. People generally don't know how forms work.
5. People just want to tick the "done" box for a task and clock out.
6. It's somehow the same people who will destroy the clutch in their car every 3 months.