Question about the timing of Biden's speech

At this point, primaries are over and many of the sane Republicans lost to MAGAts. Would it have been better to do this speech earlier in the year? Or would it have galvanized the cult even further and we’d still be in this same place?

Although Biden appealed by name to sane Republicans, the real audience must have been the independents, the undecideds, the apathetic, the both-parties-are-the-same crowd.

Hopefully, his timing, two months before the election, was spot on and will help with GOTV. Too many Americans have a notoriously short attention span.

Thoughts?