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Flash wears by erase cycle, not by write, so appending records until a sector fills before erasing spreads the wear enormously. Sixty-four byte records in a 4 kB sector give 64 writes per erase, turning 480 writes a day into just 7.5 erase cycles.
Flash wear
records per sector = sector size / record size; erase cycles per day = writes per day / records per sector
It appends until the sector is full, then moves to the next, erasing only when it wraps. That multiplies effective endurance by the records-per-sector factor.
Yes. Rotating across many sectors multiplies endurance by the sector count, which is how filesystems and EEPROM emulation layers reach millions of effective writes.