If someone wants to argue that the shuttle was an important predecessor to the Falcon 9 in demonstrating at the least the technical possibility of reusability, if not the economic success of the strategy, and possibly in working through some of the design problems, that's at least a plausible argument to make. I don't know how much of the work done on the shuttle informed (even in the "don't do what they did" sense) work done in developing the falcon rockets.
If someone want to argue that the shuttle was a major technological achievement at the time, I'm happy to agree to that as well, and while it was probably not the right direction for the space program of the 80s, its still an impressive machine.
But to suggest that its someone a better attempt at reusability than the Falcon rockets is ridiculous. The point of reusability is the fact that it allows you not to waste resources: ie. making launch cheaper. The shuttle didn't achieve that because the savings they gained from reuse were more than made up for in the costs between launches. Just look at the costs of the two vehicles to compare their success on this metric.
Personally I hope both that SpaceX continues to have success innovating in launch, and that Starship is a success, and that new comers into the reusable rocket game will also be successful and bring more competition and innovation into this sector (Blue Origin for instance, but they aren't the only ones, there is a lot of innovation going on right now).