It seems like we should be past the hubbub over lip syncing. Particularly under the specific circumstances. The “back in my day they did it live” epitomizes what OK, Boomer is all about. It’s a singular spectacle, and—really—millions upon millions just don’t care. We’ve come to accept the use of vocal tracks in far lower profile settings.
This isn't entirely a generational complaint. Bruno Mars (not a Boomer) had a fantastic Superbowl performance, all performed live. That was just one of the many Halftime performances where music artists actually played and performed. I understand the interest in a visually-emphasized production which plays well on TV. It's just to me, this performance was no better or worse when Katie Perry "performed" at the Superbowl, minus the shark costumes.
No doubt that Shakira can bump and shake-it. That was impressive given her age. Jay-lo can work a stripper pole with the best of strippers. What, if anything does that have to do with their talents as musical artists? Zero. Eye candy only.