I’ve never posted a request so some some basic stuff is unknown to me. Like, can they click on the gigs we are offering to see our portfolio, can they click on our profiles, can they message us before the decide on who to pick, do the requests disappear after they’ve chosen a seller (or am I wasting my offers)?
Buyers can do all that you described if they want to. Some buyers don’t think to or don’t care to remove their request if they hire, though. Some prefer to leave it open in case the chosen seller doesn’t work out.