I can see both sides of the coin. The manufacturer probably got tired of complaints about sights not fitting and started cutting them to the smaller side. Maybe the sight you removed was on the larger side and now the dovetail is opened up some as well. Personally I’d want a good friction fit by mashing steel somewhere instead of just counting on the locktite. The sight is cheaper than the slide, so it would get the treatment, even though it would be easier to hammer on the slide.