This meeting was a good step forward in normalizing relations between Qatar and its Arab neighbors. Though, originally, the spat between Qatar and other Arab states began because of Qatar's independent foreign policy, this is now in the past. Qatar never gave in to the unrealistic demands made during the blockade, and its Arab allies have realized that it's better to be friends than enemies.
It's good to have Qatar back in the Arab fold, especially now that the region's geopolitical fault lines have shifted substantially since 2017. Ultimately, all the UAE and other Arab states wanted was for Qatar to end its support for extremist groups throughout the region, and, for the most part, this is no longer a major issue or concern. The Arab world is far stronger when all its people work together.