Apologies for the length of this cut-and-paste but Google AI provided a very good answer to my question.
Google AI stated:
Yes, after the Battlefield 6 open beta, developers stated they would reduce and "tone down" the intensity of the sniper scope glint based on player feedback, though the feature itself would not be removed.
Why the developers made the change:
Player feedback during the beta: Players heavily criticized the original scope glint for being too bright and conspicuous. They felt it gave snipers away too easily, was not realistic, and was almost impossible to hide. Some described it as a "massive spotlight" or a "bullseye" that drew immediate fire.
Developers acknowledged the problem: Following the beta, Principal Game Designer Florian Le Bihan confirmed on social media that the development team was listening to the community's concerns and would be scaling the feature down.
Balancing the recon class: The developers explained that while the glint would be toned down, it needed to remain as an important balancing mechanic. The Recon class has unique features, and the glint is intended to prevent snipers from being overpowered by making their position known when aiming down sights.
Lessons from past games: Some players noted that developer DICE had a similar history with scope glare in Battlefield 2042, going back and forth on its implementation before finding a reasonable compromise. This history suggested that adjustments would be made for the final release of Battlefield 6.