They aren't aren't all simultaneous. Most scenes are broken down to a handful at a time, at most five in one scene. Because it's based on the Amazing Race, ultimately most of the teams would be arriving places at different times, at different sections of the race. But I totally understand, it is...
They might not get date time with all of their selected, but they do have other opportunities to spend with them. There are feasts, balls, events, even a group date. There can also be extra moments outside of official dates- moments that we make up ourselves, for them to run into each other in...
I mean... maybe not among some people but I know a lot of people who would probably disagree. So to me, it's an unpopular opinion. It shouldn't be, though.