In general I don't mind getting rid of alignment. I just think that D&D did a really clumsy job of it. Look at the Pathfinder 2e remaster for a much better way to go about it. Paizo removed alignment in a way that actually improved the flavour and variety of the game.

But with the 5e tieflings in particular, removing that one paragraph from their statblock completely takes out a lot of really evocative ideas. It was also accompanied by the removal of most of the sidebar flavour text for tieflings, which previously read:

Mutual Mistrust

People tend to be suspicious of tieflings, assuming that their infernal heritage has left its mark on their personality and morality, not just their appearance. Shopkeepers keep a close eye on their goods when tieflings enter their stores, the town watch might follow a tiefling around for a while, and demagogues blame tieflings for strange happenings. The reality, though, is that a tiefling’s bloodline doesn’t affect his or her personality to any great degree. Years of dealing with mistrust does leave its mark on most tieflings, and they respond to it in different ways. Some choose to live up to the wicked stereotype, but others are virtuous. Most are simply very aware of how people respond to them. After dealing with this mistrust throughout youth, a tiefling often develops the ability to overcome prejudice through charm or intimidation.

That got cut down to the far more brand-safe but dead boring:

Met With Mistrust

Ignorant people tend to be suspicious of tieflings, assuming that their infernal heritage has left its mark on their personality and morality, not just their appearance. The reality is that a tiefling’s bloodline doesn’t affect their personality. They are gifted with magic from the infernal realms but chart their own course in life.

Because tieflings were my absolute favourite race in D&D (thanks in no small part to Ms Evans' excellent writing), I was really, really disappointed by the changes. Those changes, as well as all the others that came out around the same time (removing whole pages of content that had already been purchased without any recourse), played no small part in my decision to switch over to Pathfinder