Visual IP is treated differently than referencing a thing. But still, you are right. We see the original Enterprise and (I think) the original uniforms in some of the flashback scenes.
I appreciate Truthseeker's share on the IP shenanigans going on, and I believe him, but . . . it is all rather silly from a "normal" person's point-of-view, if not from a profits-before-story corporate point-of-view. It seems to be a situation of studio executives having silly disputes over who gets to make more money and who doesn't, putting their concerns over profits before the story itself. Making shows like ST: Picard (and the other shows, and the movies) does require a lot of money, but if they would just stop pissing with each other and put the story first, the profits would follow. Art before money creates beloved franchises, money before art destroys them.
I will admit this, I would have never been a sturdy observer to such ongoing of IP usage, if wasn't for Star Wars, when it got bought, and when I heard that Expanded Universe legacy was being dropped, I said on that day, this will not bode well if all that material is abandoned outright. And yes, several small snippets has been used along the way, but the last set of the film Trilogy, well...everyone has their take to how they like it. But the end result business wise speak and show different.
I applied this to Star Trek, and I will admit this also, I did like the Kelvin Trek, didn't love it, just like it...and then came Discovery, and I began to see how many wrongs were occurring. I watch all 2 seasons, and said to myself, you abandon the core of what Trek meant and went on a bent to make it what actually?
Now with Picard, they got a little better, but the telltale signs of lazy writing, cheap production values, and didn't have a true direction to how the show should have started...began to show, and yes, there were bright spots along the way, but not enough to push out the smothering shadows that surrounded this show. And I have grown up with Trek as wee one. Follow almost everything, that I could follow and watch...saw the changes and accepted them, as progression.
I can't peg what Picard is, cause I don't see the message, it was here and there....and that is bad. As I has grown older, I do realize that some folks will not treat Trek the same way, we older folks understand what it meant to us, growing along with it.
And I will blame Morrus for this...my entry into EnWorld opened my eyes to many things I didn't know or understand at first. Today...is a different story.
Live Long and Prosper...