I think the issue is a lot of people wanted “Rey Solana” to be the message. That anyone can be a Jedi. TROS keeps this idea but renames it, now anyone can be a Skywalker. It actually builds on the themes of the TLJ, where Luke Skywalker was a legend. Now, anyone can be a legend.
I really don’t agree with this. Why does Rey have to be an honorary Skywalker in order to show that anyone can be a legend? Why can’t Rey make her own legacy, beyond the words “Skywalker” and “Palpatine”? Is it impossible to be a legend unless you change your last name to Skywalker? This is the kind of stuff TLJ was trying to avoid, so I don’t understand why you think Rey Palpawalker builds on the themes of TLJ any more than keeping Rey Nobody would.