I'd like to report an issue just to save others potential grief. The version of Disk Utility in Sequoia 15.4.1, at least with my MacBook Pro 9,1 with a Samsung SSD always reports that the device itself has a damaged partition map, and that all data should be backed up ASAP. No problems reported with the APFS volumes themselves. The same top level device gave no such error messages in 15.3, and if I boot the system with either a Catalina bootable USB, or an OCLP installation USB for Ventura 13.7.5, First Aid reports no problems whatsoever with the drive.
Follow up: Any bootable version of MacOS says my Samsung 870 EVO drive is fine, using Disk Utility First Aid, up through Ventura 13.7.5, Sonoma 14.7.4 and Sequoia 15.3. Boot Camp Windows says the drive is perfect, 100%. The above versions of Disk Utility also say any external USB (Western Digital, Apple OEM) drive is fine. Sonoma 14.7.5 and Sequoia 15.4.1 report that every hard drive I own has a bad partition map - internal and external.
Don't replace a drive over this! If you think you want to run First Aid to check the drive, not the volumes, use a USB installer with ANYTHING earlier than Apple's most recent MacOS updates.