All the other criticisms levelled by other reviewers are correct. Virtually all the candidates looking for romance are at least somewhat emotionally stunted, scarily narcissistic (although sub-clinically so) and xenophobic.
But that's what makes it great entertainment (if you watch it at at least 1.25 speed, avoiding the filler and repititions). These are anthropological/sociological case studies, not romances and as such they are as fascinating as they are cringe.
All of these humans have a script in their heads of what a relationship should look like as well as stereotyped, fetishized ideas of how their foreign dates look and behave. Watching them flail about and cluelessly try to impose their scripts on these (relatively) innocent strangers they just met is like watching a train-wreck.
Also, some of them grow up a little. Not nearly as neatly or completely as the show's producers would have you believe, but when they do, it's genuinely uplifting. The journey of Harold and Michaela reminds you that at least a small minority of humans are capable of growth (and that not all Americans are insufferable).