Dragon Age became popular at the start through the fact that it was dark fantasy, and in the later games remembered what you had done in your past games. Decisions that carry over. Small details that show you that your decisions in the game mattered.
That went so far that depending on what you did in Dragon Age Origins you had Queen Anora and or King Alastair appear with the mages, Cullen remembered your Origins character AND the Hawk character from Dragon Age 2, and big decisions in Origins resurfaced if you had Warden Strout (standard option), Warden Alastair or even Warden Loghain encounter your Inquisitor.
Dragon Age usually made you feel the world changed depending on what you did before. We had a event tapestry (Dragon Age Keep) dedicated to just that. A tool they had announced they would use for future projects - but pretty much scrapped that idea after Inquisition. Even that honestly I loved the keep and that Varric made the little recap for you.
A story where your decisions past and present ones had weight. Bioware was known as the ultimate decision makers.
And originally you could play your companions as well and they were able to die, that actually helped you caring for them, because if they drop you want to strategize that they stay alive. And their approval felt oftentimes at least meaningful.
In Veilguard your Past decisions do not matter at all. It literally tells you "we do not care, the south (where you had played before) is dead now".
Additionally no decision in Veilguard feels important, it is flavor play but "oh do you slap the 1st Warden or talk him down?" (that has seemingly no real effect on much at all) not like "You have to decide between saving the elves or the werewolves or decided to help both parties."
Or you have to decide to save the mages or the templars.
In the old Dragon Age games you actually could be evil to a point, you could have your own opinion about things. Like Bloodmagic, sure in Inquisition you could not practice it, but you could at least have an opinion about it. In Origins and DA2 you even could do Blood Magic and it had - partially actually consequences.
The only past decision is "Oh yeah if your Inquisitor romanced Solas there is a special ending", everything else does not really matter.
And it is even more bitter when you saw the artbook and saw that this ALL was planned, and I went through those pages and was like "I want that game!", starting at the Inquisition being sent by the Inquisitor, the plans looked promising, but it got scrapped, because of team changes and they were told to release a Life Service game, the community protested agaunst - it still feels like one just without the service.
Don't understand me wrong, I played Veilguard through twice and it is a solid game, but all the things that remind me of Dragon Age, just remind me how the other Dragon Age games were and that I'd rather play those.
I literally just recently played an entire path through. Dragon Age: Origins/Awakening, Dragon Age 2 and Dragon Age : Inquisition and when I was through with Trespasser (DA:I DLC) I just wanted to keep going, keep gaming.