Decentralized sequencing is a solution for censorship resistance and trust-minimization. It does not necessarily imply better uptime. Rollups are able to retain extremely high uptime because they have centralized infra. Decentralized sequencing (among untrusted parties) incurs constant risk of sequencer failure. While the network may recover from these failures more quickly (<33 mins in comparison to @base yesterday) the chance of failures occurring is higher. There are many benefits to decentralized sequencing, but it is not a silver bullet to all our problems.