Not exactly, but because some firms define work experience distinctively. Some recognise volunteering, open days, and forage as a job opportunity whilst some don't and quite strict. Even, fulltime jobs like cashier at shop or waitress at McDonald's aren't job they want.
Willkie is the example, they provide their own bar to explain forage outside of work experience section. That's why maybe Vantage wouldn't allow candidates to save this part as it's more dynamic than the grades which is permanent.
Also, the style to answer whether bullet point or pros, American firm is more direct than British. I've seen magic circle and City firms prefer pros or combined with bullet point whereas the other prefer bullet points to show metrics and concise words.
