More importantly, "We’re becoming Massachusetts!" would have worked a lot better when the state hadn’t become Massachusetts yet.
It's actually smart; she's trying to win a primary right now but she doesn't want to take positions unpopular with the general electorate. This is the type of thing that might go well with Republican primary voters without damaging her in the general.
I don't see how anything she's said over the last week is supposed to help with a GE.
The goal isn't to boost her in the GE, it's to boost herself in the primary without hurting her in the GE. Winning the primary often requires one to take positions unpopular with the general electorate such as "Trump actually won in 2020", and saying "We're becoming Massachusetts" is unlikely to
hurt her in the general election.