The reason may be exporting 92,000 rows with PHPSpreadsheet might not hit memory limits because the data itself is likely simple, requiring less memory per cell. PHP's memory management is efficient; even with no limit, it only uses what's needed, especially if your system has plenty of RAM. Laravel, if used, could be subtly optimizing data retrieval with lazy loading, preventing the entire dataset from being held in memory at once. Finally, the lack of a memory leak just means memory is properly released, not that usage is inherently low, but rather handled cleanly.