are they really not going to enjoy Pesach if they stay home?
Possibly NOT, if all their friends and family usually also go away. Really, why do you care so much??? It’s like you are actually ANGRY with those people who choose to go away, as if somehow it offends you that they are “abrograting their responsibility” to clean for Pesach. I am staying home, as always, and obviously you are, too. Someone else wants to go away – let him have a lovely zees Pesach with his wife and children.