Sure you can just pour the Rotel directly out of the jar onto your taco if you want, but there's an expectation here of doing it up for the occasion. So individual serving bowls, spoons, and tongs for at least ten items. Because you don't just want everyone shoving their hands in the cheese bags. It makes a better presentation and it has better utility value. If I was preparing this meal I'd probably have even a few more items than what she's listed.

All the individual little components of a DIY taco bar make it a more complicated meal than you'd anticipate = society is fucked.