Have 2x PC and that never happened be it on Windows Install or a Major Update. Tho, one system can with Windows Home and the other had no OS. And I presume - this probably happens only on systems with Windows 10/11 Pro - who already has BL set/activated by the OEM. I don't have much experience with BL - so i base this assumption on the way Windows and OEM products - function in general, as in: you can download the Windows.iso (or use MC) from Microsoft and do a fresh install on laptop - yet this days, in most cases - you don't even have to check the OEM site for drivers - cause Windows already knows what drivers are needed - which are installed through Windows Update, even more than that - also know what "dedicated" software comes with your specific model.
For example nahimic/A-Volute - a software meant for audio enhancement. The audio card included with this laptop is a rather typical Realtek chip included with multiple other laptops - used by many other brands, and yet - not all of them come with this software. It's simply a bonus pack meant for specif laptop models. Be it on a fresh install or while uninstalling the Audio Drivers - Windows (Update chancel) knows that my model comes with this software - it even knows the exact driver (last version on the OEM site) - the exact version which works with this laptop. If i try a different or newer version (since that one is from 2020) - the Audio get partially broken on this rig. And yet, with that old driver works perfectly.
Again, it's just an aumtion - but BL might work the same way. While checking the OEM data base for your specific model - Windows knows that laptop came with BL enabled and does just that. As a workaround - you could buy a Windows Home Key and switch that.